User:Dunstvangeet/Senate Seniority

1st Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	John Langdon (P-NH)	March 4, 1789	Former Governor
2	William Grayson (A-VA)		Virginia 1st in Population (Constitution)	Alphabetical (G)	March 12, 1790
3	Richard Henry Lee (A-VA)		Virginia 1st in Population (Constitution)	Alphabetical (L)
4	Tristram Dalton (P-MA)		Massachusetts and Pennsylvania 2nd in Population (Constitution)	Alphabetical (D)
5	William Maclay (A-PA)			Alphabetical (MA)
6	Robert Morris (P-PA)			Alphabetical (MO)
7	Caleb Strong (P-MA)			Alphabetical (S)
8	Charles Carroll (P-MD)		Maryland 4th in Population (Constitution)	Alphabetical (C)
9	John Henry (P-MD)		Maryland 4th in Population (Constitution)	Alphabetical (H)
10	Pierce Butler (P-SC)		South Carolina and Connecticut 6th in Population (Constitution)	Alphabetical (B)
11	Oliver Ellsworth (P-CT)			Alphabetical (E)
12	Ralph Izard (P-SC)			Alphabetical (I)
13	William Samuel Johnson (P-CT)			Alphabetical (J)
14	Jonathan Elmer (P-NJ)		New Jersey 9th in Population (Constitution)	Alphabetical (E)
15	William Paterson (P-NJ)		New Jersey 9th in Population (Constitution)	Alphabetical (P)	November 13, 1790
16	William Few (A-GA)		Georgia and New Hampshire 10th in Population (Constitution)	Alphabetical (F)
17	James Gunn (A-GA)			Alphabetical (G)
18	Paine Wingate (A-NH)			Alphabetical (W)
19	Richard Bassett (A-DE)		Delaware 12th in Population (Constitution)	Alphabetical (B)
20	George Read (P-DE)		Delaware 12th in Population (Constitution)	Alphabetical (R)
21	Rufus King (P-NY)	July 16, 1789	Alphabetical (K)
22	Philip John Schuyler (P-NY)	July 16, 1789	Alphabetical (S)
23	Samuel Johnston (P-NC)	November 27, 1789	Former Governor
24	Benjamin Hawkins (P-NC)	November 27, 1789
	John Walker (P-VA)	March 31, 1790			November 9, 1790
25	Theodore Foster (P-RI)	June 7, 1790	Alphabetical (F)
26	Joseph Stanton IV (A-RI)	June 7, 1790	Alphabetical: (S)
	James Monroe (A-VA)	November 9, 1790
	Philemon Dickinson (P-NJ)	November 23, 1790

2nd Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	John Langdon (P-NH)	March 4, 1789	Former Governor
2	Richard Henry Lee (A-VA)		Virginia 1st in Population (Constitution)		October 8, 1792
3	Robert Morris (P-PA)		Massachusetts and Pennsylvania 2nd in Population (Constitution)	Alphabetical (M)
4	Caleb Strong (P-MA)			Alphabetical (S)
5	Charles Carroll (P-MD)		Maryland 4th in Population (Constitution)	Alphabetical (C)	November 30, 1792
6	John Henry (P-MD)		Maryland 4th in Population (Constitution)	Alphabetical (H)
7	Pierce Butler (A-SC)		South Carolina and Connecticut 6th in Population (Constitution)	Alphabetical (B)
8	Oliver Ellsworth (P-CT)			Alphabetical (E)
9	Ralph Izard (P-SC)			Alphabetical (I)
10	William Samuel Johnson (P-CT)			Alphabetical (J)	March 4, 1791
11	William Few (A-GA)		Georgia and New Hampshire 10th in Population (Constitution)	Alphabetical (F)
12	James Gunn (A-GA)			Alphabetical (G)
13	Paine Wingate (A-NH)			Alphabetical (W)
14	Richard Bassett (P-DE)		Delaware 12th in Population (Constitution)	Alphabetical (B)
15	George Read (P-DE)		Delaware 12th in Population (Constitution)	Alphabetical (R)
16	Rufus King (P-NY)	July 16, 1789
17	Samuel Johnston (P-NC)	November 27, 1789	Former Governor
18	Benjamin Hawkins (A-NC)	November 27, 1789
19	Theodore Foster (P-RI)	June 7, 1790	Alphabetical (F)
20	Joseph Stanton IV (A-RI)	June 7, 1790	Alphabetical (S)
21	James Monroe (A-VA)	November 9, 1790
22	Philemon Dickinson (P-NJ)	November 23, 1790
23	George Cabot (P-MA)	March 4, 1791	Massachusetts 2nd in Population (Constitution)
24	Aaron Burr (A-NY)		New York 4th in Population (Constitution)
25	John Rutherfurd (P-NJ)		New Jersey 9th in Population (Constitution)
	Roger Sherman (P-CT)	June 13, 1791
26	Moses Robinson (A-VT)	October 17, 1791	Former Governor
27	Stephen Row Bradley (A-VT)	October 17, 1791
28	John Brown (A-KY)	June 18, 1792	Former Representative
29	John Edwards (A-KY)	June 18, 1792
	John Taylor (A-VA)	October 18, 1792
	Richard Potts (P-MD)	January 10, 1793
30	Open Seat (PA)	N/A

3rd Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	John Langdon (A-NH)	March 4, 1789	Former Governor
2	Robert Morris (P-PA)		Massachusetts and Pennsylvania 2nd in Population (Constitution)	Alphabetical (M)
3	Caleb Strong (P-MA)			Alphabetical (S)
4	John Henry (P-MD)		Maryland 4th in Population (Constitution)
5	Pierce Butler (A-SC)		South Carolina and Connecticut 6th in Population (Constitution)	Alphabetical (B)
6	Oliver Ellsworth (P-CT)			Alphabetical (E)
7	Ralph Izard (P-SC)			Alphabetical (I)
8	James Gunn (A-GA)		Georgia 10th in Population (Constitution)
9	George Read (P-DE)		Delaware 12th in Population (Constitution)		September 18, 1793
10	Rufus King (P-NY)	July 16, 1789
11	Benjamin Hawkins (A-NC)	November 27, 1789
12	Theodore Foster (P-RI)	June 7, 1790
13	James Monroe (A-VA)	November 9, 1790			May 27, 1794
14	George Cabot (P-MA)	March 4, 1791	Massachusetts 2nd in Population (Constitution)
15	Aaron Burr (A-NY)		New York 4th in Population (Constitution)
16	John Rutherfurd (P-NJ)		New Jersey 9th in Population (Constitution)
17	Roger Sherman (P-CT)	June 13, 1791			July 23, 1793
18	Moses Robinson (A-VT)	October 17, 1791	Former Governor
19	Stephen Row Bradley (A-VT)	October 17, 1791
20	John Brown (A-KY)	June 18, 1792	Former Representative
21	John Edwards (A-KY)	June 18, 1792
22	John Taylor (A-VA)	October 18, 1792			May 11, 1794
23	Richard Potts (P-MD)	January 10, 1793
24	John Vining (P-DE)	March 4, 1793	Former Representative (4 years)
25	James Jackson (A-GA)		Former Representative (2 years)
26	Alexander Martin (A-NC)		Former Governor
27	Frederick Frelinghuysen (P-NJ)		New Jersey 9th in Population (1790 Census)
28	Samuel Livermore (P-NH)		New Hampshire 10th in Population (1790 Census)
29	William Bradford (P-RI)		Rhode Island 14th in Population (1790 Census)
30	Albert Gallatin (A-PA)	December 2, 1793	Pennsylvania 2nd in Population (1790 Census)		February 28, 1794
	Stephen Mix Mitchell (P-CT)	December 2, 1793	Connecticut 8th in Population (1790 Census)
	James Ross (P-PA)	April 24, 1794
	Stevens Thomson Mason (A-VA)	November 18, 1794
	Henry Tazewell (A-VA)	December 29, 1794
	Henry Latimer (P-DE)	February 7, 1795

4th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	John Langdon (DR-NH)	March 4, 1789	Former Governor
2	Caleb Strong (F-MA)		Massachusetts 2nd in Population (Constitution)		June 1, 1796
3	John Henry (F-MD)		Maryland 4th in Population (Constitution)
4	Pierce Butler (DR-SC)		South Carolina and Connecticut 6th in Population (Constitution)	Alphabetical (B)	October 25, 1796
5	Oliver Ellsworth (F-CT)			Alphabetical (E)	March 8, 1796
6	James Gunn (F-GA)		Georgia 10th in Population (Constitution)
7	Rufus King (F-NY)	July 16, 1789			May 23, 1796
8	Theodore Foster (F-RI)	June 7, 1790
9	George Cabot (F-MA)	March 4, 1791	Massachusetts 2nd in Population (Constitution)		June 9, 1796
10	Aaron Burr (DR-NY)		New York 4th in Population (Constitution)
11	John Rutherfurd (F-NJ)		New Jersey 9th in Population (Constitution)
12	Moses Robinson (DR-VT)	October 17, 1791			October 15, 1796
13	John Brown (DR-KY)	June 18, 1792
14	Richard Potts (F-MD)	January 10, 1793			October 24, 1796
15	John Vining (F-DE)	March 4, 1793	Former Representative (4 years)
16	James Jackson (DR-GA)		Former Representative (2 years)		November 16, 1795
17	Alexander Martin (DR-NC)		Former Governor
18	Frederick Frelinghuysen (F-NJ)		New Jersey 9th in Population (1790 Census)		November 12, 1796
19	Samuel Livermore (F-NH)		New Hampshire 10th in Population (1790 Census)
20	William Bradford (F-RI)		Rhode Island 14th in Population (1790 Census)
21	James Ross (F-PA)	April 24, 1794
22	Stevens Thomson Mason (DR-VA)	November 18, 1794
23	Henry Tazewell (DR-VA)	December 29, 1794
24	Henry Latimer (F-DE)	February 7, 1795
25	Jonathan Trumbull, Jr. (F-CT)	March 4, 1795	Former Representative (6 years)		June 10, 1796
26	Timothy Bloodworth (DR-NC)		Former Representative (0 years)
27	William Bingham (F-PA)		Pennsylvania 2nd in Population (1790)
28	Jacob Read (F-SC)		South Carolina 7th in Population (1790)
29	Elijah Paine (F-VT)		Vermont 11th in Population (1790)
30	Humphrey Marshall (F-KY)		Kentucky 13th in Population (1790)
	George Walton (F-GA)	November 16, 1795			February 20, 1796
	Josiah Tattnall (DR-GA)	February 20, 1796
	Benjamin Goodhue (F-MA)	June 11, 1796	Alphabetical (G)
	Theodore Sedgwick (F-MA)	June 11, 1796	Alphabetical (S)
31	William Blount (DR-TN)	August 2, 1796	Alphabetical (B)
32	William Cocke (DR-TN)	August 2, 1796	Alphabetical (C)
	Uriah Tracy (F-CT)	October 13, 1796
	Isaac Tichenor (F-VT)	October 18, 1796
	John Laurance (F-NY)	November 9, 1796
	Richard Stockton (F-NJ)	November 12, 1796
	John Eager Howard (F-MD)	November 21, 1796
	James Hillhouse (F-CT)	December 6, 1796
	John Hunter (DR-SC)	December 8, 1796

5th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	John Langdon (DR-NH)	March 4, 1789	Former Governor
2	John Henry (F-MD)		Maryland 4th in Population (Constitution)	December 10, 1797
3	James Gunn (F-GA)		Georgia 10th in Population (Constitution)
4	Theodore Foster (F-RI)	June 7, 1790
5	John Rutherfurd (F-NJ)	March 4, 1791		December 5, 1798
6	John Brown (DR-KY)	June 18, 1792
7	John Vining (F-DE)	March 4, 1793	Former Representative	January 19, 1798
8	Alexander Martin (DR-NC)		Former Governor
9	Samuel Livermore (F-NH)		New Hampshire 10th in Population (1790)
10	William Bradford (F-RI)		Rhode Island 14th in Population (1790)	October 1797
11	James Ross (F-PA)	April 24, 1794
12	Stevens Thomson Mason (DR-VA)	November 18, 1794
13	Henry Tazewell (DR-VA)	December 29, 1794		January 24, 1799
14	Henry Latimer (F-DE)	February 7, 1795
15	Timothy Bloodworth (DR-NC)	March 4, 1795	Former Representative
16	William Bingham (F-PA)		Pennsylvania 2nd in Population (1790)
17	Jacob Read (F-SC)		South Carolina 7th in Population (1790)
18	Elijah Paine (F-VT)		Vermont 11th in Population (1790)
19	Humphrey Marshall (F-KY)		Kentucky 13th in Population (1790)
20	Josiah Tattnall (DR-GA)	February 20, 1796
21	Benjamin Goodhue (F-MA)	June 11, 1796	Alphabetical (G)
22	Theodore Sedgwick (F-MA)	June 11, 1796	Alphabetical (S)
23	William Blount (DR-TN)	August 2, 1796	Alphabetical (B)	July 8, 1797
24	William Cocke (DR-TN)	August 2, 1796	Alphabetical (C)	September 26, 1797
25	Uriah Tracy (F-CT)	October 13, 1796
26	Isaac Tichenor (F-VT)	October 18, 1796		October 17, 1797
27	John Laurance (F-NY)	November 9, 1796
28	Richard Stockton (F-NJ)	November 12, 1796
29	John Eager Howard (F-MD)	November 21, 1796
30	James Hillhouse (F-CT)	December 6, 1796
31	John Hunter (DR-SC)	December 8, 1796		November 26, 1798
32	Philip John Schuyler (F-NY)	March 4, 1797		January 3, 1798
	Andrew Jackson (DR-TN)	September 26, 1797	Former Representative	April 1798
	Joseph Inslee Anderson (DR-TN)	September 26, 1797
	Nathaniel Chipman (F-VT)	October 17, 1797
	Ray Greene (F-RI)	November 13, 1797
	James Lloyd (F-MD)	December 8, 1797
	John Sloss Hobart (F-NY)	January 11, 1798		April 16, 1798
	Joshua Clayton (F-DE)	January 19, 1798		August 11, 1798
	William North (F-NY)	May 5, 1798		August 17, 1798
	James Watson (F-NY)	August 17, 1798
	Daniel Smith (DR-TN)	October 6, 1798
	Franklin Davenport (F-NJ)	December 5, 1798
	Charles Pinckney (DR-SC)	December 6, 1798
	William Hill Wells (F-DE)	January 17, 1799

6th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	John Langdon (DR-NH)	March 4, 1789	Former Governor
2	James Gunn (F-GA)	March 4, 1789
3	Theodore Foster (F-RI)	June 7, 1790
4	John Brown (DR-KY)	June 18, 1792
5	Samuel Livermore (F-NH)	March 4, 1793
6	James Ross (F-PA)	April 24, 1794
7	Stevens Thomson Mason (DR-VA)	November 18, 1794
8	Henry Latimer (F-DE)	February 7, 1795			February 28, 1801
9	Timothy Bloodworth (DR-NC)	March 4, 1795	Former Representative
10	William Bingham (F-PA)		Pennsylvania 2nd in Population (1790)
11	Jacob Read (F-SC)		South Carolina 7th in Population (1790)
12	Elijah Paine (F-VT)		Vermont 11th in Population (1790)
13	Humphrey Marshall (F-KY)		Kentucky 13th in Population (1790)
14	Benjamin Goodhue (F-MA)	June 11, 1796			November 8, 1800
15	Uriah Tracy (F-CT)	October 13, 1796
16	John Laurance (F-NY)	November 9, 1796			August 1800
17	John Eager Howard (F-MD)	November 21, 1796
18	James Hillhouse (F-CT)	December 6, 1796
19	Joseph Inslee Anderson (DR-TN)	September 26, 1797
20	Nathaniel Chipman (F-VT)	October 17, 1797
21	Ray Greene (F-RI)	November 13, 1797
22	James Lloyd (F-MD)	December 8, 1797			December 1, 1800
23	James Watson (F-NY)	August 17, 1798			March 19, 1800
24	Charles Pinckney (DR-SC)	December 6, 1798
25	William Hill Wells (F-DE)	January 17, 1799
26	William Cocke (DR-TN)	March 4, 1799	Former Senator
27	Abraham Baldwin (DR-GA)		Former Representative (10 years)
28	Jonathan Dayton (F-NJ)		Former Representative (8 years)
29	James Schureman (F-NJ)		Former Representative (4 years)		February 16, 1801
30	Jesse Franklin (DR-NC)		Former Representative (2 years)	North Carolina 3rd in Population (1790)
31	Samuel Dexter (F-MA)		Former Representative (2 years)	Massachusetts 4th in Population (1790)	May 30, 1800
32	Wilson Cary Nicholas (DR-VA)	December 5, 1799
	Gouverneur Morris (F-NY)	April 3, 1800
	Dwight Foster (F-MA)	June 6, 1800
	John Armstrong, Jr. (DR-NY)	November 6, 1800
	Jonathan Mason (F-MA)	November 14, 1800
	William Hindman (F-MD)	December 12, 1800
	Aaron Ogden (F-NJ)	February 28, 1801	New Jersey 9th in Population (1790)
	Samuel White (F-DE)	February 28, 1801	Delaware 15th in Population (1790)

7th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Theodore Foster (DR-RI)	June 7, 1790
2	John Brown (DR-KY)	June 18, 1792
3	Samuel Livermore (F-NH)	March 4, 1793			June 12, 1801
4	James Ross (F-PA)	April 24, 1794
5	Stevens Thomson Mason (DR-VA)	November 18, 1794
6	Elijah Paine (F-VT)	March 4, 1795			September 1, 1801
7	Uriah Tracy (F-CT)	October 13, 1796
8	John Eager Howard (F-MD)	November 21, 1796
9	James Hillhouse (F-CT)	December 6, 1796
10	Joseph Inslee Anderson (DR-TN)	September 26, 1797
11	Nathaniel Chipman (F-VT)	October 17, 1797
12	Ray Greene (F-RI)	November 13, 1797			March 5, 1801
13	Charles Pinckney (DR-SC)	December 6, 1798			June 6, 1801
14	William Hill Wells (F-DE)	January 17, 1799
15	William Cocke (DR-TN)	March 4, 1799	Former Senator
16	Abraham Baldwin (DR-GA)		Former Representative (10 years)
17	Jonathan Dayton (F-NJ)		Former Representative (8 years)
18	Jesse Franklin (DR-NC)		Former Representative (2 years)
19	Wilson Cary Nicholas (DR-VA)	December 5, 1799
20	Gouverneur Morris (F-NY)	April 3, 1800
21	Dwight Foster (F-MA)	June 6, 1800			March 2, 1803
22	John Armstrong, Jr. (DR-NY)	November 6, 1800			February 5, 1802
23	Jonathan Mason (F-MA)	November 14, 1800
24	William Hindman (F-MD)	December 12, 1800			November 19, 1801
25	Aaron Ogden (F-NJ)	February 28, 1801	New Jersey 9th in Population (1790)
26	Samuel White (F-DE)	February 28, 1801	Delaware 15th in Population (1790)
27	James Jackson (DR-GA)	March 4, 1801	Former Senator
28	John Peter Gabriel Muhlenberg (DR-PA)		Former Representative (6 years)		June 30, 1801
29	David Stone (DR-NC)		Former Representative (2 years)	North Carolina 3rd in Population (1790)
30	James Sheafe (F-NH)		Former Representative (2 years)	New Hampshire 10th in Population (1790)	June 14, 1802
31	John Ewing Colhoun (DR-SC)		South Carolina 7th in Population (1790)		October 26, 1802
32	John Breckinridge (DR-KY)		Kentucky 13th in Population (1790)
	Christopher Ellery (DR-RI)	May 6, 1801
	Simeon Olcott (F-NH)	June 17, 1801
	George Logan (DR-PA)	July 13, 1801
	Stephen Row Bradley (DR-VT)	October 15, 1801
	Robert Wright (DR-MD)	November 19, 1801
	Thomas Sumter (DR-SC)	December 15, 1801
	De Witt Clinton (DR-NY)	February 9, 1802
	William Plumer (F-NH)	June 17, 1802
	Pierce Butler (DR-SC)	November 4, 1802
33	Open Seat (OH)	N/A
34	Open Seat (OH)	N/A

8th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	John Brown (DR-KY)	June 18, 1792
2	Stevens Thomson Mason (DR-VA)	November 18, 1794		May 10, 1803
3	Uriah Tracy (F-CT)	October 13, 1796
4	James Hillhouse (F-CT)	December 6, 1796
5	Joseph Inslee Anderson (DR-TN)	September 26, 1797
6	William Hill Wells (F-DE)	January 17, 1799		November 6, 1804
7	William Cocke (DR-TN)	March 4, 1799	Former Senator
8	Abraham Baldwin (DR-GA)		Former Representative (10 years)
9	Jonathan Dayton (F-NJ)		Former Representative (8 years)
10	Jesse Franklin (DR-NC)		Former Representative (2 years)
11	Wilson Cary Nicholas (DR-VA)	December 5, 1799		May 22, 1804
12	Samuel White (F-DE)	February 28, 1801
13	James Jackson (DR-GA)	March 4, 1801	Former Senator
14	David Stone (DR-NC)		Former Representative
15	John Breckinridge (DR-KY)
16	Christopher Ellery (F-RI)	May 6, 1801
17	Simeon Olcott (F-NH)	June 17, 1801
18	George Logan (DR-PA)	July 13, 1801
19	Stephen Row Bradley (DR-VT)	October 15, 1801
20	Robert Wright (DR-MD)	November 19, 1801
21	Thomas Sumter (DR-SC)	December 15, 1801
22	De Witt Clinton (DR-NY)	February 9, 1802		November 4, 1803
23	William Plumer (F-NH)	June 17, 1802
24	Pierce Butler (DR-SC)	November 4, 1802		November 21, 1804
25	Samuel Smith (DR-MD)	March 4, 1803	Former Representative (10 years)
26	Theodorus Bailey (DR-NY)		Former Representative (7 years)	January 16, 1804
27	Israel Smith (DR-VT)		Former Representative (5 years)
28	Samuel Maclay (DR-PA)		Former Representative (2 years)
29	Timothy Pickering (F-MA)		Former Cabinent Member
30	John Quincy Adams (F-MA)		Massachusetts 5th in Population (1800)
31	Samuel John Potter (DR-RI)		Rhode Island 15th in Population (1800)	October 14, 1804
32	John Smith (DR-OH)	April 1, 1803	Alphabetical (S)
33	Thomas Worthington (DR-OH)	April 1, 1803	Alphabetical (W)
	John Taylor (DR-VA)	June 4, 1803		December 7, 1803
34	John Condit (DR-NJ)	September 1, 1803
	John Armstrong, Jr. (DR-NY)	November 10, 1803		June 30, 1804
	Abraham Bedford Venable (DR-VA)	December 7, 1803		June 7, 1804
	John Smith (DR-NY)	February 23, 1804
	William Branch Giles (DR-VA)	August 11, 1804
	Benjamin Howland (DR-RI)	October 29, 1804
	James Asheton Bayard, Sr. (F-DE)	November 13, 1804
	Samuel Latham Mitchill (DR-NY)	November 23, 1804
	Andrew Moore (DR-VA)	December 4, 1804
	John Gaillard (DR-SC)	December 6, 1804

9th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	Uriah Tracy (F-CT)	October 13, 1796
2	James Hillhouse (F-CT)	December 6, 1796
3	Joseph Inslee Anderson (DR-TN)	September 26, 1797
4	Abraham Baldwin (DR-GA)	March 4, 1799
5	Samuel White (F-DE)	February 28, 1801
6	James Jackson (DR-GA)	March 4, 1801	Former Senator	March 19, 1806
7	David Stone (DR-NC)		Former Representative	February 17, 1807
8	John Breckinridge (DR-KY)			August 7, 1805
9	George Logan (DR-PA)	July 13, 1801
10	Stephen Row Bradley (DR-VT)	October 15, 1801
11	Robert Wright (DR-MD)	November 19, 1801		November 12, 1806
12	Thomas Sumter (DR-SC)	December 15, 1801
13	William Plumer (F-NH)	June 17, 1802
14	Samuel Smith (DR-MD)	March 4, 1803	Former Representative (10 years)
15	Israel Smith (DR-VT)		Former Representative (5 years)
16	Samuel Maclay (DR-PA)		Former Representative (2 years)
17	Timothy Pickering (F-MA)		Former Cabinent Member
18	John Quincy Adams (F-MA)
19	John Smith (DR-OH)	April 1, 1803	Alphabetical (S)
20	Thomas Worthington (DR-OH)	April 1, 1803	Alphabetical (W)
21	John Condit (DR-NJ)	September 1, 1803
22	John Smith (DR-NY)	February 23, 1804
23	William Branch Giles (DR-VA)	August 11, 1804
24	Benjamin Howland (DR-RI)	October 29, 1804
25	James Asheton Bayard, Sr. (F-DE)	November 13, 1804
26	Samuel Latham Mitchill (DR-NY)	November 23, 1804
27	Andrew Moore (DR-VA)	December 4, 1804
28	John Gaillard (DR-SC)	December 6, 1804
29	Daniel Smith (DR-TN)	March 4, 1805	Former Senator
30	Nicholas Gilman (DR-NH)		Former Representative (8 years)
31	Aaron Kitchell (DR-NJ)		Former Representative (4 years)
32	James Turner (DR-NC)		Former Governor
33	Buckner Thruston (DR-KY)		Kentucky 9th in Population (1800)
34	James Fenner (DR-RI)		Rhode Island 15th in Population (1800)
	John Adair (DR-KY)	November 8, 1805		November 18, 1806
	John Milledge (DR-GA)	June 19, 1806
	Henry Clay (DR-KY)	November 19, 1806
	Philip Reed (DR-MD)	November 25, 1806

10th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	Uriah Tracy (F-CT)	October 13, 1796		July 19, 1807
2	James Hillhouse (F-CT)	December 6, 1796
3	Joseph Inslee Anderson (DR-TN)	September 26, 1797
4	Abraham Baldwin (DR-GA)	March 4, 1799		March 4, 1807
5	Samuel White (F-DE)	February 28, 1801
6	Stephen Row Bradley (DR-VT)	October 15, 1801
7	Thomas Sumter (DR-SC)	December 15, 1801
8	Samuel Smith (DR-MD)	March 4, 1803	Former Representative (10 years)
9	Israel Smith (DR-VT)		Former Representative (5 years)	October 1, 1807
10	Samuel Maclay (DR-PA)		Former Representative (2 years)	January 4, 1809
11	Timothy Pickering (F-MA)		Former Cabinent Member
12	John Quincy Adams (F-MA)			June 8, 1808
13	John Smith (DR-OH)	April 1, 1803		April 25, 1808
14	John Condit (DR-NJ)	September 1, 1803
15	John Smith (DR-NY)	February 23, 1804
16	William Branch Giles (DR-VA)	August 11, 1804
17	Benjamin Howland (DR-RI)	October 29, 1804
18	James Asheton Bayard, Sr. (F-DE)	November 13, 1804
19	Samuel Latham Mitchill (DR-NY)	November 23, 1804
20	Andrew Moore (DR-VA)	December 4, 1804
21	John Gaillard (DR-SC)	December 6, 1804
22	Daniel Smith (DR-TN)	March 4, 1805	Former Senator
23	Nicholas Gilman (DR-NH)		Former Representative (8 years)
24	Aaron Kitchell (DR-NJ)		Former Representative (4 years)
25	James Turner (DR-NC)		Former Governor
26	Buckner Thruston (DR-KY)		Kentucky 9th in Population (1800)
27	James Fenner (DR-RI)		Rhode Island 15th in Population (1800)	September 1807
28	John Milledge (DR-GA)	June 19, 1806
29	Philip Reed (DR-MD)	November 25, 1806
30	Jesse Franklin (DR-NC)	March 4, 1807	Former Senator
31	Andrew Gregg (DR-PA)		Former Representative
32	Edward Tiffin (DR-OH)		Former Governor
33	John Pope (DR-KY)		Kentucky 9th in Population (1800)
34	Nahum Parker (DR-KY)		Rhode Island 11th in Population (1800)
	George Jones (DR-GA)	August 27, 1807		November 7, 1807
	Jonathan Robinson (DR-VT)	October 10, 1807
	Chauncey Goodrich (F-CT)	October 25, 1807
	Elisha Mathewson (DR-RI)	October 26, 1807
	William Harris Crawford (DR-GA)	November 7, 1807
	James Lloyd (F-MA)	June 9, 1808
	Return Jonathan Meigs, Jr. (DR-OH)	December 12, 1808
	Michael Leib (DR-PA)	December 12, 1808

11th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	James Hillhouse (F-CT)	December 6, 1796			June 10, 1810
2	Joseph Inslee Anderson (DR-TN)	September 26, 1797
3	Samuel White (F-DE)	February 28, 1801			November 4, 1809
4	Stephen Row Bradley (DR-VT)	October 15, 1801
5	Thomas Sumter (DR-SC)	December 15, 1801			December 16, 1810
6	Samuel Smith (DR-MD)	March 4, 1803	Former Representative
7	Timothy Pickering (F-MA)	March 4, 1803
8	John Smith (DR-NY)	February 23, 1804
9	William Branch Giles (DR-VA)	August 11, 1804
10	James Asheton Bayard, Sr. (F-DE)	November 13, 1804
11	John Gaillard (DR-SC)	December 6, 1804
12	Daniel Smith (DR-TN)	March 4, 1805	Former Senator		March 31, 1809
13	Nicholas Gilman (DR-NH)		Former Representative (8 years)
14	Aaron Kitchell (DR-NJ)		Former Representative (4 years)		March 12, 1809
15	James Turner (DR-NC)		Former Governor
16	Buckner Thruston (DR-KY)				December 18, 1809
17	John Milledge (DR-GA)	June 19, 1806			November 14, 1809
18	Philip Reed (DR-MD)	November 25, 1806
19	Jesse Franklin (DR-NC)	March 4, 1807	Former Senator
20	Andrew Gregg (DR-PA)		Former Representative
21	John Pope (DR-KY)		Kentucky 9th in Population (1800)
22	Nahum Parker (DR-KY)		Rhode Island 11th in Population (1800)		June 1, 1810
23	Jonathan Robinson (DR-VT)	October 10, 1807
24	Chauncey Goodrich (F-CT)	October 25, 1807
25	Elisha Mathewson (DR-RI)	October 26, 1807
26	William Harris Crawford (DR-GA)	November 7, 1807
27	James Lloyd (F-MA)	June 9, 1808
28	Return Jonathan Meigs, Jr. (DR-OH)	December 12, 1808			December 8, 1810
29	Michael Leib (DR-PA)	December 12, 1808
30	Richard Brent (DR-VA)	March 4, 1809	Former Representative (6 years)
31	John Lambert (DR-NJ)		Former Representative (4 years)	New Jersey 10th in Population (1800)
32	Francis Malbone (F-RI)		Former Representative (4 years)	Rhode Island 10th in Population (1800)	June 4, 1809
33	Obadiah German (DR-NY)
	John Condit (DR-NJ)	March 21, 1809
	Jenkin Whiteside (DR-TN)	April 11, 1809
34	Stanley Griswold (F-RI)	May 18, 1809			December 11, 1809
	Christopher Grant Champlin (DR-RI)	June 26, 1809
	Charles Tait (DR-GA)	November 27, 1809
	Alexander Campbell (DR-OH)	November 27, 1809
	Henry Clay (DR-KY)	January 4, 1810
	Outerbridge Horsey (F-DE)	January 12, 1810
	Charles Cutts (DR-NH)	June 21, 1810
	Samuel Whittlesey Dana (F-CT)	December 4, 1810
	Thomas Worthington (DR-OH)	December 15, 1810
	John Taylor (DR-SC)	December 31, 1810

12th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	Joseph Inslee Anderson (DR-TN)	September 26, 1797
2	Stephen Row Bradley (DR-VT)	October 15, 1801
3	Samuel Smith (DR-MD)	March 4, 1803
4	John Smith (DR-NY)	February 23, 1804
5	William Branch Giles (DR-VA)	August 11, 1804
6	James Asheton Bayard, Sr. (F-DE)	November 13, 1804
7	John Gaillard (DR-SC)	December 6, 1804
8	Nicholas Gilman (DR-NH)	March 4, 1805	Former Representative
9	James Turner (DR-NC)	March 4, 1805
10	Philip Reed (DR-MD)	November 25, 1806
11	Jesse Franklin (DR-NC)	March 4, 1807	Former Senator
12	Andrew Gregg (DR-PA)		Former Representative
13	John Pope (DR-KY)
14	Jonathan Robinson (DR-VT)	October 10, 1807
15	Chauncey Goodrich (F-CT)	October 25, 1807
16	William Harris Crawford (DR-GA)	November 7, 1807
17	James Lloyd (F-MA)	June 9, 1808
18	Michael Leib (DR-PA)	December 12, 1808
19	Richard Brent (DR-VA)	March 4, 1809	Former Representative (6 years)
20	John Lambert (DR-NJ)		Former Representative (4 years)
21	Obadiah German (DR-NY)
22	John Condit (DR-NJ)	March 21, 1809
23	Jenkin Whiteside (DR-TN)	April 11, 1809		October 8, 1811
24	Christopher Grant Champlin (DR-RI)	June 26, 1809		October 2, 1811
25	Charles Tait (DR-GA)	November 27, 1809
26	Alexander Campbell (DR-OH)	November 27, 1809
27	Outerbridge Horsey (F-DE)	January 12, 1810
28	Charles Cutts (DR-NH)	June 21, 1810
29	Samuel Whittlesey Dana (F-CT)	December 4, 1810
30	Thomas Worthington (DR-OH)	December 15, 1810
31	John Taylor (DR-SC)	December 31, 1810
32	George Mortimer Bibb (DR-KY)	March 4, 1811	Kentucky 9th in Population (1800)
33	Jeremiah Brown Howell (DR-RI)	March 4, 1811	Rhode Island 15th in Population (1800)
34	Joseph Bradley Varnum (DR-MA)	June 29, 1811
	George Washington Campbell (DR-TN)	October 8, 1811
	William Hunter (F-RI)	October 28, 1811
35	Jean Noel Destréhan (DR-LA)	September 3, 1812	Alphabetical (D)	October 1, 1812
36	Allan Bowie Magruder (DR-LA)	September 3, 1812	Alphabetical (M)
	Thomas Posey (DR-LA)	October 8, 1812		February 4, 1813
	James Brown (DR-LA)	February 5, 1813

13th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	Joseph Inslee Anderson (DR-TN)	September 26, 1797
2	Samuel Smith (DR-MD)	March 4, 1803
3	William Branch Giles (DR-VA)	August 11, 1804
4	John Gaillard (DR-SC)	December 6, 1804
5	Nicholas Gilman (DR-NH)	March 4, 1805	Former Representative	May 2, 1814
6	James Turner (DR-NC)	March 4, 1805
7	Jonathan Robinson (DR-VT)	October 10, 1807
8	Chauncey Goodrich (F-CT)	October 25, 1807		May 13, 1813
9	William Harris Crawford (DR-GA)	November 7, 1807		March 23, 1813
10	James Lloyd (F-MA)	June 9, 1808		May 1, 1813
11	Michael Leib (DR-PA)	December 12, 1808		February 14, 1814
12	Richard Brent (DR-VA)	March 4, 1809	Former Representative (6 years)	December 30, 1814
13	John Lambert (DR-NJ)		Former Representative (4 years)
14	Obadiah German (DR-NY)
15	John Condit (DR-NJ)	March 21, 1809
16	Charles Tait (DR-GA)	November 27, 1809
17	Outerbridge Horsey (F-DE)	January 12, 1810
18	Charles Cutts (DR-NH)	June 21, 1810		June 10, 1813
19	Samuel Whittlesey Dana (F-CT)	December 4, 1810
20	Thomas Worthington (DR-OH)	December 15, 1810		December 1, 1814
21	John Taylor (DR-SC)	December 31, 1810
22	George Mortimer Bibb (DR-KY)	March 4, 1811	Kentucky 9th in Population (1800)	August 23, 1814
23	Jeremiah Brown Howell (DR-RI)	March 4, 1811	Rhode Island 15th in Population (1800)
24	Joseph Bradley Varnum (DR-MA)	June 29, 1811
25	George Washington Campbell (DR-TN)	October 8, 1811		February 11, 1814
26	William Hunter (F-RI)	October 28, 1811
27	James Brown (DR-LA)	February 5, 1813
28	Rufus King (F-NY)	March 4, 1813	Former Senator (6 years)
29	David Stone (DR-NC)		Former Senator (5 years)	December 24, 1814
30	Jeremiah Morrow (DR-OH)		Former Representative (9 years)
31	Abner Lacock (DR-OH)		Former Representative (2 years)
32	Jesse Bledsoe (DR-KY)		Kentucky 7th in Population (1810)	December 24, 1814
33	Dudley Chase (DR-VT)		Kentucky 7th in Population (1810)
34	Eligius Fromentin (DR-LA)		Louisiana 17th in Population (1810)
	William Bellinger Bulloch (DR-GA)	April 8, 1813		November 6, 1813
	Christopher Gore (F-MA)	May 5, 1813
	David Daggett (F-MA)	May 13, 1813
35	Robert Henry Goldsborough (F-MD)	May 21, 1813
36	William Hill Wells (F-DE)	May 28, 1813
	Jeremiah Mason (F-NH)	June 10, 1813
	William Wyatt Bibb (DR-GA)	November 6, 1813
	Jonathan Roberts (DR-PA)	February 24, 1814
	Jesse Wharton (DR-TN)	March 17, 1814
	Thomas Weston Thompson (F-NH)	June 24, 1814
	George Walker (DR-KY)	August 30, 1814		December 16, 1814
	Joseph Kerr (DR-OH)	December 10, 1814
	William Taylor Barry (DR-KY)	December 16, 1814
	Francis Locke (?-NC)	December 1814
	James Barbour (DR-NC)	January 2, 1814
	Isham Talbot (DR-KY)	February 2, 1814

14th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	John Gaillard (DR-SC)	December 6, 1804
2	James Turner (DR-NC)	March 4, 1805		November 21, 1816
3	John Condit (DR-NJ)	March 21, 1809
4	Charles Tait (DR-GA)	November 27, 1809
5	Outerbridge Horsey (F-DE)	January 12, 1810
6	Samuel Whittlesey Dana (F-CT)	December 4, 1810
7	John Taylor (DR-SC)	December 31, 1810		November 1816
8	Jeremiah Brown Howell (DR-RI)	March 4, 1811
9	Joseph Bradley Varnum (DR-MA)	June 29, 1811
10	William Hunter (F-RI)	October 28, 1811
11	James Brown (DR-LA)	February 5, 1813
12	Rufus King (F-NY)	March 4, 1813	Former Senator (6 years)
13	Jeremiah Morrow (DR-OH)		Former Representative (9 years)
14	Abner Lacock (DR-OH)		Former Representative (2 years)
15	Dudley Chase (DR-VT)		Kentucky 7th in Population (1810)
16	Eligius Fromentin (DR-LA)		Louisiana 17th in Population (1810)
17	Christopher Gore (F-MA)	May 5, 1813		May 30, 1816
18	David Daggett (F-MA)	May 13, 1813
19	Robert Henry Goldsborough (F-MD)	May 21, 1813
20	William Hill Wells (F-DE)	May 28, 1813
21	Jeremiah Mason (F-NH)	June 10, 1813
22	William Wyatt Bibb (DR-GA)	November 6, 1813		November 9, 1816
23	Jonathan Roberts (DR-PA)	February 24, 1814
24	Jesse Wharton (DR-TN)	March 17, 1814		October 10, 1815
25	Thomas Weston Thompson (F-NH)	June 24, 1814
26	William Taylor Barry (DR-KY)	December 16, 1814		May 1, 1816
27	Francis Locke (?-NC)	December 1814		December 5, 1815
28	James Barbour (DR-NC)	January 2, 1814
29	Isham Talbot (DR-KY)	February 2, 1814
30	Isaac Tichenor (F-VT)	March 4, 1815	Former Senator
31	Nathan Sanford (DR-NY)		New York 1st in Population (1810)
32	James Jefferson Wilson (DR-NJ)		New Jersey 12th in Population (1810)
33	Benjamin Ruggles (DR-OH)		Ohio 13th in Population (1810)
34	George Washington Campbell (DR-TN)	October 10, 1815	Former Senator
	John Williams (DR-TN)	October 10, 1815
	Nathaniel Macon (DR-NC)	December 13, 1815
35	Robert Goodloe Harper (F-MD)	January 1816		December 1816
36	Armistead Thomson Mason (DR-VA)	January 3, 1816
	Eli Porter Ashmun (F-MA)	June 12, 1816
	George Michael Troup (DR-GA)	November 13, 1816	Former Representative
	Martin D. Hardin (F-KY)	November 13, 1816
	Montfort Stokes (DR-NC)	December 4, 1816	North Carolina 4th in Population (1810)
	William Smith (DR-SC)	December 4, 1816	South Carolina 6th in Population (1810)
37	James Noble (DR-IN)	December 11, 1816	Alphabetical (N)
38	Waller Taylor (DR-IN)	December 11, 1816	Alphabetical (T)
	Alexander Contee Hanson (F-MD)	December 20, 1816

15th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	John Gaillard (DR-SC)	December 6, 1804
2	Charles Tait (DR-GA)	November 27, 1809
3	Outerbridge Horsey (F-DE)	January 12, 1810
4	Samuel Whittlesey Dana (F-CT)	December 4, 1810
5	William Hunter (F-RI)	October 28, 1811
6	Rufus King (F-NY)	March 4, 1813	Former Senator (6 years)
7	Jeremiah Morrow (DR-OH)		Former Representative (9 years)
8	Abner Lacock (DR-OH)		Former Representative (2 years)
9	Dudley Chase (DR-VT)		Kentucky 7th in Population (1810)	November 3, 1817
10	Eligius Fromentin (DR-LA)		Louisiana 17th in Population (1810)
11	David Daggett (F-MA)	May 13, 1813
12	Robert Henry Goldsborough (F-MD)	May 21, 1813
13	Jeremiah Mason (F-NH)	June 10, 1813		June 16, 1817
14	Jonathan Roberts (DR-PA)	February 24, 1814
15	James Barbour (DR-NC)	January 2, 1814
16	Isham Talbot (DR-KY)	February 2, 1814
17	Isaac Tichenor (F-VT)	March 4, 1815	Former Senator
18	Nathan Sanford (DR-NY)		New York 1st in Population (1810)
19	James Jefferson Wilson (DR-NJ)		New Jersey 12th in Population (1810)
20	Benjamin Ruggles (DR-OH)		Ohio 13th in Population (1810)
21	George Washington Campbell (DR-TN)	October 10, 1815	Former Senator	April 20, 1818
22	John Williams (DR-TN)	October 10, 1815
23	Nathaniel Macon (DR-NC)	December 13, 1815
24	Eli Porter Ashmun (F-MA)	June 12, 1816		May 10, 1818
25	George Michael Troup (DR-GA)	November 13, 1816		September 23, 1818
26	Montfort Stokes (DR-NC)	December 4, 1816	North Carolina 4th in Population (1810)
27	William Smith (DR-SC)	December 4, 1816	South Carolina 6th in Population (1810)
28	James Noble (DR-IN)	December 11, 1816	Alphabetical (N)
29	Waller Taylor (DR-IN)	December 11, 1816	Alphabetical (T)
30	Alexander Contee Hanson (F-MD)	December 20, 1816
31	John Wayles Eppes (DR-VA)	March 4, 1817	Former Representative (10 years)
32	Harrison Gray Otis (F-MA)		Former Representative (4 years)
33	Nicholas Van Dyke (F-DE)		Former Representative (3 years, 4 Months)
34	William Charles Cole Claiborne (DR-LA)		Former Representative (3 years, 3 Months)	November 23, 1817
35	Mahlon Dickerson (DR-NJ)		Former Governor
36	John Jordan Crittenden (DR-KY)		Kentucky 7th in Population (1810)
37	David Lawrence Morril (DR-NH)		New Hampshire 15th in Population (1810)
38	James Burrill, Jr. (F-RI)		Rhode Island 16th in Population (1810)
	Clement Storer (DR-NH)	June 27, 1817
	James Fisk (DR-VT)	November 4, 1817		January 8, 1818
39	Walter Leake (DR-MS)	December 10, 1817	Alphabetical (L)
40	Thomas Hill Williams (DR-MS)	December 10, 1817	Alphabetical (W)
	Henry Johnson (DR-LA)	January 12, 1818
	Prentiss Mellen (F-MA)	June 5, 1818
	John Henry Eaton (DR-TN)	September 5, 1818
	William Adams Palmer (DR-VT)	October 20, 1818
	John Forsyth (DR-GA)	November 23, 1818		February 17, 1819
41	Jesse Burgess Thomas (DR-IL)	December 3, 1818	Former Delagate
42	Ninian Edwards (DR-IL)	December 3, 1818

16th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	John Gaillard (DR-SC)	December 6, 1804
2	Outerbridge Horsey (F-DE)	January 12, 1810
3	Samuel Whittlesey Dana (F-CT)	December 4, 1810
4	William Hunter (F-RI)	October 28, 1811
5	Rufus King (F-NY)	March 4, 1813
6	Jonathan Roberts (DR-PA)	February 24, 1814
7	James Barbour (DR-NC)	January 2, 1814
8	Isaac Tichenor (F-VT)	March 4, 1815	Former Senator
9	Nathan Sanford (DR-NY)		New York 1st in Population (1810)
10	James Jefferson Wilson (DR-NJ)		New Jersey 12th in Population (1810)	January 8, 1821
11	Benjamin Ruggles (DR-OH)		Ohio 13th in Population (1810)
12	John Williams (DR-TN)	October 10, 1815
13	Nathaniel Macon (DR-NC)	December 13, 1815
14	Montfort Stokes (DR-NC)	December 4, 1816	North Carolina 4th in Population (1810)
15	William Smith (DR-SC)	December 4, 1816	South Carolina 6th in Population (1810)
16	James Noble (DR-IN)	December 11, 1816	Alphabetical (N)
17	Waller Taylor (DR-IN)	December 11, 1816	Alphabetical (T)
18	Alexander Contee Hanson (F-MD)	December 20, 1816		April 23, 1819
19	John Wayles Eppes (DR-VA)	March 4, 1817	Former Representative (10 years)	December 4, 1819
20	Harrison Gray Otis (F-MA)		Former Representative (4 years)
21	Nicholas Van Dyke (F-DE)		Former Representative (3 years)
22	Mahlon Dickerson (DR-NJ)		Former Governor
23	David Lawrence Morril (DR-NH)		New Hampshire 15th in Population (1810)
24	James Burrill, Jr. (F-RI)		Rhode Island 16th in Population (1810)	December 25, 1820
25	Walter Leake (DR-MS)	December 10, 1817	Alphabetical (L)	May 15, 1820
26	Thomas Hill Williams (DR-MS)	December 10, 1817	Alphabetical (W)
27	Henry Johnson (DR-LA)	January 12, 1818
28	Prentiss Mellen (F-MA)	June 5, 1818		May 15, 1820
29	John Henry Eaton (DR-TN)	September 5, 1818
30	William Adams Palmer (DR-VT)	October 20, 1818
31	Jesse Burgess Thomas (DR-IL)	December 3, 1818	Former Delagate
32	Ninian Edwards (DR-IL)	December 3, 1818
33	James Brown (DR-LA)	March 4, 1819	Former Senator
34	Edward Lloyd (DR-MD)		Former Representative (2 years, 3 months)
35	John Fabyan Parrott (DR-NH)		Former Representative (2 years, 0 months)
36	Walter Lowrie (DR-PA)		Pennsylvania 3rd in Population (1810)
37	William Logan (DR-KY)		Kentucky 7th in Population (1810)	May 28, 1820
38	James Lanman (DR-CT)		Georgia 11th in Population (1810)
39	John Elliott (DR-GA)		Georgia 11th in Population (1810)
40	William Allen Trimble (DR-OH)		Ohio 13th in Population (1810)
41	Freeman Walker (DR-GA)	November 6, 1819
42	Richard Mentor Johnson (DR-KY)	December 10, 1819
	James Pleasants (DR-VA)	December 10, 1819	Former Representative (8 years)
43	William Rufus de Vane King (DR-AL)		Former Representative (5 years)
44	John Williams Walker (DR-AL)
	William Pinkney (DR-MD)	December 21, 1819
	Elijah Hunt Mills (F-MA)	June 12, 1820
45	John Holmes (DR-ME)	June 13, 1820
46	John Chandler (DR-ME)	June 14, 1820
	David Holmes (DR-MS)	August 30, 1820
	Isham Talbot (DR-KY)	October 19, 1820
	Nehemiah Rice Knight (DR-RI)	January 9, 1821
	Samuel Lewis Southard (DR-NJ)	January 26, 1821

17th Congress

#	Name	Seniority Date	2nd Determining Factor	Departure Date
1	John Gaillard (DR-SC)	December 6, 1804
2	Rufus King (F-NY)	March 4, 1813
3	James Barbour (DR-NC)	January 2, 1814
4	Benjamin Ruggles (DR-OH)	March 4, 1815
5	John Williams (DR-TN)	October 10, 1815
6	Nathaniel Macon (DR-NC)	December 13, 1815
7	Montfort Stokes (DR-NC)	December 4, 1816	North Carolina 4th in Population (1810)
8	William Smith (DR-SC)	December 4, 1816	South Carolina 6th in Population (1810)
9	James Noble (DR-IN)	December 11, 1816	Alphabetical (N)
10	Waller Taylor (DR-IN)	December 11, 1816	Alphabetical (T)
11	Harrison Gray Otis (F-MA)	March 4, 1817	Former Representative (4 years)	May 30, 1822
12	Nicholas Van Dyke (F-DE)		Former Representative (3 years)
13	Mahlon Dickerson (DR-NJ)		Former Governor
14	David Lawrence Morril (DR-NH)		New Hampshire 15th in Population (1810)
15	Thomas Hill Williams (DR-MS)	December 10, 1817
16	Henry Johnson (DR-LA)	January 12, 1818
17	John Henry Eaton (DR-TN)	September 5, 1818
18	William Adams Palmer (DR-VT)	October 20, 1818
19	Jesse Burgess Thomas (DR-IL)	December 3, 1818	Former Delagate
20	Ninian Edwards (DR-IL)	December 3, 1818
21	James Brown (DR-LA)	March 4, 1819	Former Senator
22	Edward Lloyd (DR-MD)		Former Representative (2 years, 3 months)
23	John Fabyan Parrott (DR-NH)		Former Representative (2 years, 0 months)
24	Walter Lowrie (DR-PA)		Pennsylvania 3rd in Population (1810)
25	James Lanman (DR-CT)		Georgia 11th in Population (1810)
26	John Elliott (DR-GA)		Georgia 11th in Population (1810)
27	William Allen Trimble (DR-OH)		Ohio 13th in Population (1810)	December 13, 1821
28	Freeman Walker (DR-GA)	November 6, 1819		August 6, 1821
29	Richard Mentor Johnson (DR-KY)	December 10, 1819
30	James Pleasants (DR-VA)	December 14, 1819	Former Representative (8 years)	December 15, 1822
31	William Rufus de Vane King (DR-AL)		Former Representative (5 years)
32	John Williams Walker (DR-AL)			February 25, 1822
33	William Pinkney (DR-MD)	December 21, 1819		December 12, 1822
34	Elijah Hunt Mills (F-MA)	June 12, 1820
35	John Holmes (DR-ME)	June 13, 1820
36	John Chandler (DR-ME)	June 14, 1820
37	David Holmes (DR-MS)	August 30, 1820
38	Isham Talbot (DR-KY)	October 19, 1820
39	Nehemiah Rice Knight (DR-RI)	January 9, 1821
40	Samuel Lewis Southard (DR-NJ)	January 26, 1821
41	Martin Van Buren (DR-NY)	March 4, 1821	New York 1st in Population (1810)
42	Elijah Boardman (DR-CT)		Connecticut 9th in Population (1810)
43	Horatio Seymour (DR-VT)		Vermont 15th in Population (1810)
44	James De Wolf (DR-RI)		Rhode Island 17th in Population (1810)
45	David Barton (DR-MO)	August 10, 1821	Alphabetical (Ba)
46	Thomas Hart Benton (DR-MO)	August 10, 1821	Alphabetical (Be)
	Nicholas Ware (DR-GA)	November 10, 1821
47	William Findlay (DR-PA)	December 10, 1821
	Ethan Allen Brown (DR-OH)	January 3, 1822
48	Caesar Augustus Rodney (DR-DE)	January 24, 1822		January 29, 1823
	James Lloyd (F-MA)	June 5, 1822
	William Kelly (DR-AL)	December 12, 1822
	Samuel Smith (DR-MD)	December 17, 1822
	John Taylor (DR-MD)	December 18, 1822

18th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	John Gaillard (CDR-SC)	December 6, 1804
2	Rufus King (AF-NY)	March 4, 1813
3	James Barbour (CDR-NC)	January 2, 1814
4	Benjamin Ruggles (CDR-OH)	March 4, 1815
5	Nathaniel Macon (CDR-NC)	December 13, 1815
6	James Noble (CDR-IN)	December 11, 1816	Alphabetical (N)
7	Waller Taylor (ADR-IN)	December 11, 1816	Alphabetical (T)
8	Nicholas Van Dyke (AF-DE)	March 4, 1817	Former Representative
9	Mahlon Dickerson (CDR-NJ)	March 4, 1817
10	Thomas Hill Williams (JDR-MS)	December 10, 1817
11	Henry Johnson (ADR-LA)	January 12, 1818			May 27, 1824
12	John Henry Eaton (JDR-TN)	September 5, 1818
13	William Adams Palmer (ADR-VT)	October 20, 1818
14	Jesse Burgess Thomas (CDR-IL)	December 3, 1818	Former Delagate
15	Ninian Edwards (ADR-IL)	December 3, 1818			March 4, 1824
16	James Brown (ADR-LA)	March 4, 1819	Former Senator		December 10, 1823
17	Edward Lloyd (CDR-MD)		Former Representative (2 years, 3 months)
18	John Fabyan Parrott (ADR-NH)		Former Representative (2 years, 0 months)
19	Walter Lowrie (CDR-PA)		Pennsylvania 3rd in Population (1810)
20	James Lanman (CDR-CT)		Georgia 11th in Population (1810)
21	John Elliott (CDR-GA)		Georgia 11th in Population (1810)
22	Richard Mentor Johnson (JDR-KY)	December 10, 1819
23	William Rufus de Vane King (JDR-AL)	December 14, 1819
24	Elijah Hunt Mills (AF-MA)	June 12, 1820
25	John Holmes (CDR-ME)	June 13, 1820
26	John Chandler (CDR-ME)	June 14, 1820
27	David Holmes (JDR-MS)	August 30, 1820
28	Isham Talbot (ADR-KY)	October 19, 1820
29	Nehemiah Rice Knight (CDR-RI)	January 9, 1821
30	Martin Van Buren (CDR-NY)	March 4, 1821	New York 1st in Population (1810)
31	Elijah Boardman (JDR-CT)		Connecticut 9th in Population (1810)		August 18, 1823
32	Horatio Seymour (ADR-VT)		Vermont 15th in Population (1810)
33	James De Wolf (CDR-RI)		Rhode Island 17th in Population (1810)
34	David Barton (ADR-MO)	August 10, 1821	Alphabetical (Ba)
35	Thomas Hart Benton (JDR-MO)	August 10, 1821	Alphabetical (Be)
36	Nicholas Ware (CDR-GA)	November 10, 1821			September 7, 1824
37	William Findlay (JDR-PA)	December 10, 1821
38	Ethan Allen Brown (ADR-OH)	January 3, 1822
39	James Lloyd (AF-MA)	June 5, 1822
40	William Kelly (JDR-AL)	December 12, 1822
41	Samuel Smith (CDR-MD)	December 17, 1822
42	John Taylor (CDR-MD)	December 18, 1822			August 21, 1824
43	Andrew Jackson (JDR-TN)	March 4, 1823	Former Senator
44	John Branch (CDR-NC)		Former Governor	North Carolina 4th in Population (1820)
45	Samuel Bell (ADR-NH)		Former Governor	New Hampshire 15th in Population (1820)
46	Robert Young Hayne (JDR-SC)
	Henry Waggaman Edwards (JDR-CT)	October 8, 1823
47	Joseph McIlvaine (JDR-NJ)	November 12, 1823
48	Thomas Clayton (AF-DE)	January 8, 1824
	Josiah Stoddard Johnston (ADR-LA)	January 15, 1824
	Charles Dominique Joseph Bouligny (ADR-LA)	November 19, 1824
	John McLean (CDR-IL)	November 23, 1824
	Thomas Willis Cobb (CDR-GA)	December 6, 1824
	Littleton Waller Tazewell (JDR-VA)	December 7, 1824

19th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	John Gaillard (J-SC)	December 6, 1804			February 26, 1826
2	James Barbour (J-NC)	January 2, 1814			March 7, 1825
3	Benjamin Ruggles (A-OH)	March 4, 1815
4	Nathaniel Macon (J-NC)	December 13, 1815
5	James Noble (A-IN)	December 11, 1816
6	Nicholas Van Dyke (A-DE)	March 4, 1817	Former Representative		May 21, 1826
7	Mahlon Dickerson (J-NJ)	March 4, 1817
8	Thomas Hill Williams (J-MS)	December 10, 1817
9	John Henry Eaton (J-TN)	September 5, 1818
10	Jesse Burgess Thomas (A-IL)	December 3, 1818
11	Edward Lloyd (J-MD)	March 4, 1819			January 14, 1826
12	Richard Mentor Johnson (J-KY)	December 10, 1819
13	William Rufus de Vane King (J-AL)	December 14, 1819
14	Elijah Hunt Mills (A-MA)	June 12, 1820
15	John Holmes (A-ME)	June 13, 1820
16	John Chandler (J-ME)	June 14, 1820
17	David Holmes (J-MS)	August 30, 1820			September 25, 1825
18	Nehemiah Rice Knight (A-RI)	January 9, 1821
19	Martin Van Buren (J-NY)	March 4, 1821	New York 1st in Population (1810)
20	Horatio Seymour (A-VT)		Vermont 15th in Population (1810)
21	James De Wolf (A-RI)		Rhode Island 17th in Population (1810)		October 31, 1825
22	David Barton (A-MO)	August 10, 1821	Alphabetical (Ba)
23	Thomas Hart Benton (J-MO)	August 10, 1821	Alphabetical (Be)
24	William Findlay (J-PA)	December 10, 1821
25	James Lloyd (A-MA)	June 5, 1822			May 23, 1826
26	Samuel Smith (J-MD)	December 17, 1822
27	Andrew Jackson (J-TN)	March 4, 1823	Former Senator		October 14, 1825
28	John Branch (J-NC)		Former Governor	North Carolina 4th in Population (1820)
29	Samuel Bell (A-NH)		Former Governor	New Hampshire 15th in Population (1820)
30	Robert Young Hayne (J-SC)
31	Henry Waggaman Edwards (J-CT)	October 8, 1823
32	Joseph McIlvaine (A-NJ)	November 12, 1823			August 19, 1826
33	Thomas Clayton (A-DE)	January 8, 1824
34	Josiah Stoddard Johnston (A-LA)	January 15, 1824
35	Charles Dominique Joseph Bouligny (A-LA)	November 19, 1824
36	Thomas Willis Cobb (J-GA)	December 6, 1824
37	Littleton Waller Tazewell (J-VA)	December 7, 1824
38	Dudley Chase (A-VT)	March 4, 1825	Former Senator
39	William Hendricks (A-IN)		Former Representative (5 years)
40	William Henry Harrison (A-OH)		Former Representative (2 years, 3 months)
41	John Rowan (J-OH)		Former Representative (2 years, 0 months)
42	William Marks (A-PA)		Pennsylvania 2nd in Population (1820)
43	John Macpherson Berrien (J-GA)		Georgia 11th in Population (1820)
44	Henry H. Chambers (J-AL)		Alabama 19th in Population (1820)		January 24, 1826
45	Elias Kent Kane (J-IL)		Illinois 24th in Population (1820)
46	Levi Woodbury (J-NH)	March 16, 1825
47	Calvin Willey (A-CT)	May 4, 1825
	Powhatan Ellis (J-CT)	September 28, 1825			January 28, 1826
	Hugh Lawson White (J-TN)	October 28, 1825
	Asher Robbins (A-RI)	October 31, 1825
	John Randolph (J-VA)	December 26, 1825
48	Nathan Sanford (A-NY)	January 14, 1826
	Ezekiel Forman Chambers (A-MD)	January 24, 1826
	Thomas Buck Reed (J-MS)	January 28, 1826
	Israel Pickens (J-AL)	February 17, 1826			November 27, 1826
	William Harper (J-SC)	March 8, 1826			November 29, 1826
	Nathaniel Silsbee (A-MA)	May 31, 1826
	Daniel Rodney (A-DE)	November 8, 1826			January 12, 1827
	Ephraim Bateman (A-NJ)	November 10, 1826
	John McKinley (J-NJ)	November 27, 1826
	William Smith (J-SC)	November 29, 1826
	Henry Moore Ridgely (J-DE)	January 12, 1827

20th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Benjamin Ruggles (A-OH)	March 4, 1815
2	Nathaniel Macon (J-NC)	December 13, 1815			November 14, 1828
3	James Noble (A-IN)	December 11, 1816
4	Mahlon Dickerson (J-NJ)	March 4, 1817
5	Thomas Hill Williams (J-MS)	December 10, 1817
6	John Henry Eaton (J-TN)	September 5, 1818
7	Jesse Burgess Thomas (A-IL)	December 3, 1818
8	Richard Mentor Johnson (J-KY)	December 10, 1819
9	William Rufus de Vane King (J-AL)	December 14, 1819
10	John Chandler (J-ME)	June 14, 1820
11	Nehemiah Rice Knight (A-RI)	January 9, 1821
12	Martin Van Buren (J-NY)	March 4, 1821	New York 1st in Population (1810)		December 20, 1828
13	Horatio Seymour (A-VT)	March 4, 1821	Vermont 15th in Population (1810)
14	David Barton (A-MO)	August 10, 1821	Alphabetical (Ba)
15	Thomas Hart Benton (J-MO)	August 10, 1821	Alphabetical (Be)
16	Samuel Smith (J-MD)	December 17, 1822
17	John Branch (J-NC)	March 4, 1823	Former Governor	North Carolina 4th in Population (1820)
18	Samuel Bell (A-NH)		Former Governor	New Hampshire 15th in Population (1820)
19	Robert Young Hayne (J-SC)
20	Josiah Stoddard Johnston (A-LA)	January 15, 1824
21	Charles Dominique Joseph Bouligny (A-LA)	November 19, 1824
22	Thomas Willis Cobb (J-GA)	December 6, 1824			November 7, 1828
23	Littleton Waller Tazewell (J-VA)	December 7, 1824
24	Dudley Chase (A-VT)	March 4, 1825	Former Senator
25	William Hendricks (A-IN)		Former Representative (5 years)
26	William Henry Harrison (A-OH)		Former Representative (2 years, 3 months)		May 20, 1828
27	John Rowan (J-OH)		Former Representative (2 years, 0 months)
28	William Marks (A-PA)		Pennsylvania 2nd in Population (1820)
29	John Macpherson Berrien (J-GA)		Georgia 11th in Population (1820)
30	Elias Kent Kane (J-IL)		Illinois 24th in Population (1820)
31	Levi Woodbury (J-NH)	March 16, 1825
32	Calvin Willey (A-CT)	May 4, 1825
33	Hugh Lawson White (J-TN)	October 28, 1825
34	Asher Robbins (A-RI)	October 31, 1825
35	Nathan Sanford (A-NY)	January 14, 1826
36	Ezekiel Forman Chambers (A-MD)	January 24, 1826
37	Nathaniel Silsbee (A-MA)	May 31, 1826
38	Ephraim Bateman (A-NJ)	November 10, 1826			January 12, 1829
39	John McKinley (J-NJ)	November 27, 1826
40	William Smith (J-SC)	November 29, 1826
41	Henry Moore Ridgely (J-DE)	January 12, 1827
42	Powhatan Ellis (J-MS)	March 4, 1827	Former Senator
43	Louis McLane (J-DE)		Former Representative (10 years)
44	John Tyler (J-VA)		Former Representative (4 years, 3 months)
45	Samuel Augustus Foot (A-CT)		Former Representative (4 years, 0 months)
46	Albion Keith Parris (J-ME)		Former Representative (2 years)		August 26, 1828
47	Isaac Dutton Barnard (J-PA)
48	Daniel Webster (A-MA)	December 17, 1827
	Oliver Hillhouse Prince (J-GA)	November 7, 1828
	Jacob Burnet (A-OH)	December 10, 1828
	James Iredell (J-NC)	December 15, 1828
	John Holmes (A-ME)	January 15, 1829	Former Senator
	Charles Edward Dudley (J-NY)	January 15, 1829

21st Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Benjamin Ruggles (A-OH)	March 4, 1815
2	James Noble (A-IN)	December 11, 1816			February 26, 1831
3	Mahlon Dickerson (J-NJ)	March 4, 1817
4	John Henry Eaton (J-TN)	September 5, 1818			March 9, 1829
5	William Rufus de Vane King (J-AL)	December 14, 1819
6	Nehemiah Rice Knight (A-RI)	January 9, 1821
7	Horatio Seymour (A-VT)	March 4, 1821
8	David Barton (A-MO)	August 10, 1821	Alphabetical (Ba)
9	Thomas Hart Benton (J-MO)	August 10, 1821	Alphabetical (Be)
10	Samuel Smith (J-MD)	December 17, 1822
11	John Branch (J-NC)	March 4, 1823	Former Governor	North Carolina 4th in Population (1820)	March 9, 1829
12	Samuel Bell (A-NH)		Former Governor	New Hampshire 15th in Population (1820)
13	Robert Young Hayne (J-SC)
14	Josiah Stoddard Johnston (A-LA)	January 15, 1824
15	Littleton Waller Tazewell (J-VA)	December 7, 1824
16	Dudley Chase (A-VT)	March 4, 1825	Former Senator
17	William Hendricks (A-IN)		Former Representative (5 years)
18	John Rowan (J-OH)		Former Representative (2 years)
19	William Marks (A-PA)		Pennsylvania 2nd in Population (1820)
20	John Macpherson Berrien (J-GA)		Georgia 11th in Population (1820)		March 9, 1829
21	Elias Kent Kane (J-IL)		Illinois 24th in Population (1820)
22	Levi Woodbury (J-NH)	March 16, 1825
23	Calvin Willey (A-CT)	May 4, 1825
24	Hugh Lawson White (J-TN)	October 28, 1825
25	Asher Robbins (A-RI)	October 31, 1825
26	Nathan Sanford (A-NY)	January 14, 1826
27	Ezekiel Forman Chambers (A-MD)	January 24, 1826
28	Nathaniel Silsbee (A-MA)	May 31, 1826
29	John McKinley (J-NJ)	November 27, 1826
30	William Smith (J-SC)	November 29, 1826
31	Powhatan Ellis (J-MS)	March 4, 1827	Former Senator
32	Louis McLane (J-DE)		Former Representative (10 years)		April 16, 1829
33	John Tyler (J-VA)		Former Representative (4 years, 3 months)
34	Samuel Augustus Foot (A-CT)		Former Representative (4 years, 0 months)
35	Isaac Dutton Barnard (J-PA)
36	Daniel Webster (A-MA)	December 17, 1827
37	Jacob Burnet (A-OH)	December 10, 1828
38	James Iredell (J-NC)	December 15, 1828
39	John Holmes (A-ME)	January 15, 1829	Former Senator
40	Charles Edward Dudley (J-NY)	January 15, 1829
41	George Mortimer Bibb (J-KY)	March 4, 1829	Former Senator (3 years)
42	George Michael Troup (J-GA)		Former Senator (1 year, 10 months)
43	Thomas Buck Reed (J-MS)		Former Senator (1 year, 1 month)		November 26, 1829
44	John McLean (J-IL)		Former Senator (0 years)		October 14, 1830
45	Edward Livingston (J-LA)		Former Representative (12 years)
46	Peleg Sprague (A-ME)		Former Representative (4 years)
47	Theodore Frelinghuysen (A-NJ)		New Jersey 13th in Population (1820)
48	John Middleton Clayton (A-DE)		Delaware 22nd in Population (1820)
	Felix Grundy (J-TN)	October 19, 1829
	John Forsyth (J-GA)	November 9, 1829
	Bedford Brown (J-NC)	November 9, 1829
	Robert Huntington Adams (J-MS)	January 6, 1830			July 2, 1830
	Arnold Naudain (A-DE)	January 13, 1830
	George Poindexter (A-MS)	October 15, 1830
	David Jewett Baker (J-IL)	November 12, 1830			December 11, 1830
	John McCracken Robinson (J-IL)	December 11, 1830

22nd Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Benjamin Ruggles (A-OH)	March 4, 1815
2	Mahlon Dickerson (J-NJ)	March 4, 1817
3	William Rufus de Vane King (J-AL)	December 14, 1819
4	Nehemiah Rice Knight (A-RI)	January 9, 1821
5	Horatio Seymour (A-VT)	March 4, 1821
6	Thomas Hart Benton (J-MO)	August 10, 1821
7	Samuel Smith (J-MD)	December 17, 1822
8	Samuel Bell (A-NH)	March 4, 1823	Former Governor
9	Robert Young Hayne (N-SC)	March 4, 1823			December 13, 1832
10	Josiah Stoddard Johnston (A-LA)	January 15, 1824
11	Littleton Waller Tazewell (J-VA)	December 7, 1824			July 16, 1832
12	William Hendricks (A-IN)	March 4, 1825	Former Representative
13	Elias Kent Kane (J-IL)	March 4, 1825
14	Hugh Lawson White (J-TN)	October 28, 1825
15	Asher Robbins (A-RI)	October 31, 1825
16	Ezekiel Forman Chambers (A-MD)	January 24, 1826
17	Nathaniel Silsbee (A-MA)	May 31, 1826
18	Powhatan Ellis (J-MS)	March 4, 1827	Former Senator		July 16, 1832
19	John Tyler (J-VA)		Former Representative (4 years, 3 months)
20	Samuel Augustus Foot (A-CT)		Former Representative (4 years, 0 months)
21	Isaac Dutton Barnard (J-PA)				December 6, 1831
22	Daniel Webster (A-MA)	December 17, 1827
23	John Holmes (A-ME)	January 15, 1829	Former Senator
24	Charles Edward Dudley (J-NY)	January 15, 1829
25	George Mortimer Bibb (J-KY)	March 4, 1829	Former Senator (3 years)
26	George Michael Troup (J-GA)		Former Senator (1 year)
27	Edward Livingston (J-LA)		Former Representative (12 years)		May 24, 1831
28	Peleg Sprague (A-ME)		Former Representative (4 years)
29	Theodore Frelinghuysen (A-NJ)		New Jersey 13th in Population (1820)
30	John Middleton Clayton (A-DE)		Delaware 22nd in Population (1820)
31	Felix Grundy (J-TN)	October 19, 1829
32	John Forsyth (J-GA)	November 9, 1829
33	Bedford Brown (J-NC)	December 9, 1829
34	Arnold Naudain (A-DE)	January 13, 1830
35	George Poindexter (A-MS)	October 15, 1830
36	John McCracken Robinson (J-IL)	December 11, 1830
37	Gideon Tomlinson (A-CT)	March 4, 1831	Former Representative (8 years)	Connecticut 14th in Population (1820)
38	Gabriel Moore (J-AL)		Former Representative (8 years)	Alabama 19th in Population (1820)
39	Willie Person Mangum (J-NC)		Former Representative (3 years)
40	Stephen Decatur Miller (N-SC)		Former Representative (2 years)		March 2, 1833
41	William Learned Marcy (J-NY)		New York 1st in Population (1820)		January 1, 1833
42	William Wilkins (J-PA)		Pennsylvania 2nd in Population (1820)
43	Thomas Ewing (A-OH)		Ohio 5th in Population (1820)
44	Isaac Hill (J-NH)		New Hampshire 15th in Population (1820)
45	Samuel Prentiss (A-VT)		Vermont 16th in Population (1820)
46	Alexander Buckner (J-MO)		Missouri 24th in Population (1820)
47	Robert Hanna (A-IN)	August 19, 1831			January 3, 1832
48	Henry Clay (A-KY)	November 10, 1831
	George Augustus Waggaman (A-LA)	November 15, 1831
	George Mifflin Dallas (J-PA)	December 13, 1831
	John Tipton (J-IN)	January 3, 1832
	John Black (J-MS)	November 12, 1832
	William Cabell Rives (J-VA)	December 10, 1832
	John Caldwell Calhoun (N-SC)	December 29, 1832
	Silas Wright, Jr. (J-NY)	January 4, 1833

23rd Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	William Rufus de Vane King (J-AL)	December 14, 1819
2	Nehemiah Rice Knight (A-RI)	January 9, 1821
3	Thomas Hart Benton (J-MO)	August 10, 1821
4	Samuel Bell (A-NH)	March 4, 1823
5	Josiah Stoddard Johnston (A-LA)	January 15, 1824			May 19, 1833
6	William Hendricks (A-IN)	March 4, 1825	Former Representative
7	Elias Kent Kane (J-IL)	March 4, 1825
8	Hugh Lawson White (J-TN)	October 28, 1825
9	Asher Robbins (A-RI)	October 31, 1825
10	Ezekiel Forman Chambers (A-MD)	January 24, 1826			December 20, 1834
11	Nathaniel Silsbee (A-MA)	May 31, 1826
12	John Tyler (A-VA)	March 4, 1827
13	Daniel Webster (A-MA)	December 17, 1827
14	George Mortimer Bibb (J-KY)	March 4, 1829	Former Senator (3 years)
15	George Michael Troup (J-GA)		Former Senator (1 year)		November 8, 1833
16	Peleg Sprague (A-ME)		Former Representative		January 1, 1835
17	Theodore Frelinghuysen (A-NJ)		New Jersey 13th in Population (1820)
18	John Middleton Clayton (A-DE)		Delaware 22nd in Population (1820)
19	Felix Grundy (J-TN)	October 19, 1829
20	John Forsyth (J-GA)	November 9, 1829			June 27, 1834
21	Bedford Brown (J-NC)	December 9, 1829
22	Arnold Naudain (A-DE)	January 13, 1830
23	George Poindexter (A-MS)	October 15, 1830
24	John McCracken Robinson (J-IL)	December 11, 1830
25	Gideon Tomlinson (A-CT)	March 4, 1831	Former Representative (8 years)	Connecticut 14th in Population (1820)
26	Gabriel Moore (A-AL)		Former Representative (8 years)	Alabama 19th in Population (1820)
27	Willie Person Mangum (A-NC)		Former Representative (3 years)
28	William Wilkins (J-PA)		Pennsylvania 2nd in Population (1820)		June 30, 1834
29	Thomas Ewing (A-OH)		Ohio 5th in Population (1820)
30	Isaac Hill (J-NH)		New Hampshire 15th in Population (1820)
31	Samuel Prentiss (A-VT)		Vermont 16th in Population (1820)
32	Alexander Buckner (J-MO)		Missouri 24th in Population (1820)		June 6, 1833
33	Henry Clay (A-KY)	November 10, 1831
34	George Augustus Waggaman (A-LA)	November 15, 1831
35	John Tipton (J-IN)	January 3, 1832
36	John Black (A-MS)	November 12, 1832
37	William Cabell Rives (J-VA)	December 10, 1832			February 22, 1834
38	John Caldwell Calhoun (N-SC)	December 29, 1832
39	Silas Wright, Jr. (J-NY)	January 4, 1833
40	Samuel Lewis Southard (A-NJ)	March 4, 1833	Former Senator
41	Joseph Kent (A-MD)		Former Representative (10 years)
42	Samuel McKean (J-PA)		Former Representative (6 years)
43	Benjamin Swift (A-VT)		Former Representative (4 years)
44	Nathaniel Pitcher Tallmadge (J-NY)		New York 1st in Population (1830)
45	Thomas Morris (J-OH)		Ohio 4th in Population (1830)
46	Ether Shepley (J-ME)		Maine 12th in Population (1830)
47	Nathan Smith (A-CT)		Connecticut 16th in Population (1830)
	Lewis Fields Linn (J-MO)	October 25, 1833
	John Pendleton King (J-GA)	November 21, 1833
48	William Campbell Preston (N-SC)	November 26, 1833
	Alexander Porter (A-LA)	December 19, 1833
	Benjamin Watkins Leigh (A-VA)	February 26, 1834
	James Buchanan (J-PA)	December 6, 1834
	Alfred Cuthbert (J-GA)	January 12, 1835
	Robert Henry Goldsborough (A-MD)	January 13, 1835
	John Ruggles (J-ME)	January 20, 1835

24th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	William Rufus de Vane King (J-AL)	December 14, 1819
2	Nehemiah Rice Knight (A-RI)	January 9, 1821
3	Thomas Hart Benton (J-MO)	August 10, 1821
4	William Hendricks (A-IN)	March 4, 1825	Former Representative
5	Elias Kent Kane (J-IL)	March 4, 1825			December 12, 1835
6	Hugh Lawson White (J-TN)	October 28, 1825
7	Asher Robbins (A-RI)	October 31, 1825
8	John Tyler (A-VA)	March 4, 1827			February 29, 1836
9	Daniel Webster (A-MA)	December 17, 1827
10	John Middleton Clayton (A-DE)	March 4, 1829			December 29, 1836
11	Felix Grundy (J-TN)	October 19, 1829
12	Bedford Brown (J-NC)	December 9, 1829
13	Arnold Naudain (A-DE)	January 13, 1830			June 16, 1836
14	John McCracken Robinson (J-IL)	December 11, 1830
15	Gideon Tomlinson (A-CT)	March 4, 1831	Former Representative (8 years)	Connecticut 14th in Population (1820)
16	Gabriel Moore (A-AL)		Former Representative (8 years)	Alabama 19th in Population (1820)
17	Willie Person Mangum (A-NC)		Former Representative (3 years)		November 26, 1836
18	Thomas Ewing (A-OH)		Ohio 5th in Population (1820)
19	Isaac Hill (J-NH)		New Hampshire 15th in Population (1820)		May 30, 1836
20	Samuel Prentiss (A-VT)		Vermont 16th in Population (1820)
21	Henry Clay (A-KY)	November 10, 1831
22	John Tipton (J-IN)	January 3, 1832
23	John Black (A-MS)	November 12, 1832
24	John Caldwell Calhoun (N-SC)	December 29, 1832
25	Silas Wright, Jr. (J-NY)	January 4, 1833
26	Samuel Lewis Southard (A-NJ)	March 4, 1833	Former Senator
27	Joseph Kent (A-MD)		Former Representative (10 years)
28	Samuel McKean (J-PA)		Former Representative (6 years)
29	Benjamin Swift (A-VT)		Former Representative (4 years)
30	Nathaniel Pitcher Tallmadge (J-NY)		New York 1st in Population (1830)
31	Thomas Morris (J-OH)		Ohio 4th in Population (1830)
32	Ether Shepley (J-ME)		Maine 12th in Population (1830)		March 3, 1836
33	Nathan Smith (A-CT)		Connecticut 16th in Population (1830)		December 6, 1835
34	Lewis Fields Linn (J-MO)	October 25, 1833
35	John Pendleton King (J-GA)	November 21, 1833
36	William Campbell Preston (N-SC)	November 26, 1833
37	Alexander Porter (A-LA)	December 19, 1833			January 5, 1837
38	Benjamin Watkins Leigh (A-VA)	February 26, 1834			July 4, 1836
39	James Buchanan (J-PA)	December 6, 1834
40	Alfred Cuthbert (J-GA)	January 12, 1835
41	Robert Henry Goldsborough (A-MD)	January 13, 1835			October 5, 1836
42	John Ruggles (J-ME)	January 20, 1835
43	John Jordan Crittenden (A-KY)	March 4, 1835	Former Senator
44	John Davis (A-MA)		Former Representative (8 years)
45	Henry Hubbard (J-NH)		Former Representative (6 years)
46	Garret Dorset Wall (J-NJ)		New Jersey 14th in Population (1830)
47	Robert John Walker (J-MS)		Mississippi 22nd in Population (1830)
	John Milton Niles (J-CT)	December 21, 1835
	William Lee Davidson Ewing (J-IL)	December 30, 1835
48	Robert Carter Nicholas (J-LA)	January 13, 1836
	William Cabell Rives (J-IL)	March 4, 1836
	John Page (J-VA)	June 8, 1836
	Richard Henry Bayard (A-DE)	June 17, 1836
49	Ambrose Hundley Sevier (J-AR)	September 18, 1836	Former Delegate
50	William Savin Fulton (J-AR)	September 18, 1836
	Robert Strange (J-NC)	December 5, 1836
	Judah Dana (J-ME)	December 7, 1836
	Richard Elliott Parker (J-VA)	December 12, 1836
	John Selby Spence (A-MD)	December 31, 1836
	Thomas Clayton (A-DE)	January 9, 1837
	Alexander Mouton (J-LA)	January 12, 1837
51	Lucius Lyon (J-MI)	January 26, 1837	Former Delagate
52	John Norvell (J-MI)	January 26, 1837

25th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	William Rufus de Vane King (D-AL)	December 14, 1819
2	Nehemiah Rice Knight (W-RI)	January 9, 1821
3	Thomas Hart Benton (D-MO)	August 10, 1821
4	Hugh Lawson White (W-TN)	October 28, 1825
5	Asher Robbins (W-RI)	October 31, 1825
6	Daniel Webster (W-MA)	December 17, 1827
7	Felix Grundy (D-TN)	October 19, 1829			July 4, 1838
8	Bedford Brown (D-NC)	December 9, 1829
9	John McCracken Robinson (D-IL)	December 11, 1830
10	Samuel Prentiss (W-VT)	March 4, 1831
11	Henry Clay (W-KY)	November 10, 1831
12	John Tipton (D-IN)	January 3, 1832
13	John Black (W-MS)	November 12, 1832			January 22, 1838
14	John Caldwell Calhoun (D-SC)	December 29, 1832
15	Silas Wright, Jr. (D-NY)	January 4, 1833
16	Samuel Lewis Southard (W-NJ)	March 4, 1833	Former Senator
17	Joseph Kent (W-MD)		Former Representative (10 years)		November 24, 1837
18	Samuel McKean (D-PA)		Former Representative (6 years)
19	Benjamin Swift (W-VT)		Former Representative (4 years)
20	Nathaniel Pitcher Tallmadge (D-NY)		New York 1st in Population (1830)
21	Thomas Morris (D-OH)		Ohio 4th in Population (1830)
22	Lewis Fields Linn (D-MO)	October 25, 1833
23	John Pendleton King (D-GA)	November 21, 1833			November 1, 1837
24	William Campbell Preston (W-SC)	November 26, 1833
25	James Buchanan (D-PA)	December 6, 1834
26	Alfred Cuthbert (D-GA)	January 12, 1835
27	John Ruggles (D-ME)	January 20, 1835
28	John Jordan Crittenden (W-KY)	March 4, 1835	Former Senator
29	John Davis (W-MA)		Former Representative (8 years)
30	Henry Hubbard (D-NH)		Former Representative (6 years)
31	Garret Dorset Wall (D-NJ)		New Jersey 14th in Population (1830)
32	Robert John Walker (D-MS)		Mississippi 22nd in Population (1830)
33	John Milton Niles (D-CT)	December 21, 1835
34	Robert Carter Nicholas (D-LA)	January 13, 1836
35	William Cabell Rives (D-IL)	March 4, 1836
36	Richard Henry Bayard (W-DE)	June 17, 1836
37	Ambrose Hundley Sevier (D-AR)	September 18, 1836	Former Delegate
38	William Savin Fulton (D-AR)	September 18, 1836
39	Robert Strange (D-NC)	December 5, 1836
40	Richard Elliott Parker (D-VA)	December 12, 1836			March 13, 1837
41	John Selby Spence (W-MD)	December 31, 1836
42	Thomas Clayton (W-DE)	January 9, 1837
43	Alexander Mouton (D-LA)	January 12, 1837
44	Lucius Lyon (D-MI)	January 26, 1837	Former Delagate
45	John Norvell (D-MI)	January 26, 1837
46	John McKinley (D-AL)	March 4, 1837	Former Senator		April 22, 1837
47	Franklin Pierce (D-NH)		Former Representative (4 years)
48	William Allen (D-OH)		Former Representative (2 years)	Ohio 4th in Population (1830)
49	Oliver Hampton Smith (W-IN)		Former Representative (2 years)	Indiana 13th in Population (1830)
50	Reuel Williams (D-ME)		Maine 12th in Population (1830)
51	Perry Smith (D-CT)		Connecticut 16th in Population (1830)
52	Richard Montgomery Young (D-IL)		Illinois 20th in Population (1830)
	William Henry Roane (D-VA)	March 14, 1837
	Clement Comer Clay (D-AL)	June 19, 1837
	Wilson Lumpkin (D-GA)	November 22, 1837
	William Duhurst Merrick (W-MD)	January 4, 1838
	James Fisher Trotter (D-MS)	January 22, 1838			June 10, 1838
	Ephraim Hubbard Foster (D-TN)	September 17, 1838
	Thomas Hickman Williams (D-MS)	November 12, 1838

26th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	William Rufus de Vane King (D-AL)	December 14, 1819
2	Nehemiah Rice Knight (W-RI)	January 9, 1821
3	Thomas Hart Benton (D-MO)	August 10, 1821
4	Hugh Lawson White (W-TN)	October 28, 1825			January 13, 1840
5	Daniel Webster (W-MA)	December 17, 1827			February 22, 1841
6	Bedford Brown (D-NC)	December 9, 1829			November 16, 1840
7	John McCracken Robinson (D-IL)	December 11, 1830
8	Samuel Prentiss (W-VT)	March 4, 1831
9	Henry Clay (W-KY)	November 10, 1831
10	John Caldwell Calhoun (D-SC)	December 29, 1832
11	Silas Wright, Jr. (D-NY)	January 4, 1833
12	Samuel Lewis Southard (W-NJ)	March 4, 1833	Former Senator
13	Nathaniel Pitcher Tallmadge (W-NY)	March 4, 1833
14	Lewis Fields Linn (D-MO)	October 25, 1833
15	William Campbell Preston (W-SC)	November 26, 1833
16	James Buchanan (D-PA)	December 6, 1834
17	Alfred Cuthbert (D-GA)	January 12, 1835
18	John Ruggles (D-ME)	January 20, 1835
19	John Jordan Crittenden (W-KY)	March 4, 1835	Former Senator
20	John Davis (W-MA)		Former Representative (8 years)		January 5, 1841
21	Henry Hubbard (D-NH)		Former Representative (6 years)
22	Garret Dorset Wall (D-NJ)		New Jersey 14th in Population (1830)
23	Robert John Walker (D-MS)		Mississippi 22nd in Population (1830)
24	Robert Carter Nicholas (D-LA)	January 13, 1836
25	William Cabell Rives (W-VA)	March 4, 1836
26	Richard Henry Bayard (W-DE)	June 17, 1836			September 19, 1839
27	Ambrose Hundley Sevier (D-AR)	September 18, 1836	Former Delegate
28	William Savin Fulton (D-AR)	September 18, 1836
29	Robert Strange (D-NC)	December 5, 1836			November 16, 1840
30	John Selby Spence (W-MD)	December 31, 1836			October 24, 1840
31	Thomas Clayton (W-DE)	January 9, 1837
32	Alexander Mouton (D-LA)	January 12, 1837
33	John Norvell (D-MI)	January 26, 1837
34	Franklin Pierce (D-NH)	March 4, 1837	Former Representative (4 years)
35	William Allen (D-OH)		Former Representative (2 years)	Ohio 4th in Population (1830)
36	Oliver Hampton Smith (W-IN)		Former Representative (2 years)	Indiana 13th in Population (1830)
37	Reuel Williams (D-ME)		Maine 12th in Population (1830)
38	Perry Smith (D-CT)		Connecticut 16th in Population (1830)
39	Richard Montgomery Young (D-IL)		Illinois 20th in Population (1830)
40	William Henry Roane (D-VA)	March 14, 1837
41	Clement Comer Clay (D-AL)	June 19, 1837
42	Wilson Lumpkin (D-GA)	November 22, 1837
43	William Duhurst Merrick (W-MD)	January 4, 1838
44	Albert Smith White (W-IN)	March 4, 1839	Former Representative
45	Benjamin Tappan (D-OH)		Ohio 4th in Population (1830)
46	Thaddeus Betts (W-CT)		Connecticut 16th in Population (1830)		April 7, 1840
47	Samuel Shethar Phelps (W-VT)		Vermont 17th in Population (1830)
48	John Henderson (W-MS)		Mississippi 22nd in Population (1830)
49	Nathan Fellows Dixon (W-RI)		Rhode Island 23rd in Population (1830)
50	Felix Grundy (D-TN)	December 14, 1839			December 19, 1840
51	Daniel Sturgeon (D-PA)	January 14, 1840
52	Augustus Seymour Porter (W-MI)	January 20, 1840
	Alexander Outlaw Anderson (D-TN)	February 26, 1840
	Jabez Williams Huntington (W-CT)	May 4, 1840
	Willie Person Mangum (W-NC)	November 25, 1840	Former Senator
	William Alexander Graham (W-NC)	November 25, 1840
	Alfred Osborn Pope Nicholson (D-TN)	December 25, 1840
	John Leeds Kerr (W-MD)	January 5, 1841
	Isaac Chapman Bates (W-MA)	January 13, 1841
	Rufus Choate (W-MA)	February 23, 1841

27th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	William Rufus de Vane King (D-AL)	December 14, 1819
2	Thomas Hart Benton (D-MO)	August 10, 1821
3	Samuel Prentiss (W-VT)	March 4, 1831			April 11, 1842
4	Henry Clay (W-KY)	November 10, 1831			March 31, 1842
5	John Caldwell Calhoun (D-SC)	December 29, 1832
6	Silas Wright, Jr. (D-NY)	January 4, 1833
7	Samuel Lewis Southard (W-NJ)	March 4, 1833	Former Senator		June 26, 1842
8	Nathaniel Pitcher Tallmadge (W-NY)	March 4, 1833
9	Lewis Fields Linn (D-MO)	October 25, 1833
10	William Campbell Preston (W-SC)	November 26, 1833			November 29, 1842
11	James Buchanan (D-PA)	December 6, 1834
12	Alfred Cuthbert (D-GA)	January 12, 1835
13	Robert John Walker (D-MS)	March 4, 1835
14	William Cabell Rives (W-VA)	March 4, 1836
15	Richard Henry Bayard (W-DE)	June 17, 1836
16	Ambrose Hundley Sevier (D-AR)	September 18, 1836	Former Delegate
17	William Savin Fulton (D-AR)	September 18, 1836
18	Thomas Clayton (W-DE)	January 9, 1837
19	Alexander Mouton (D-LA)	January 12, 1837			March 1, 1842
20	Franklin Pierce (D-NH)	March 4, 1837	Former Representative (4 years)	February 28, 1842
21	William Allen (D-OH)		Former Representative (2 years)	Ohio 4th in Population (1830)
22	Oliver Hampton Smith (W-IN)		Former Representative (2 years)	Indiana 13th in Population (1830)
23	Reuel Williams (D-ME)		Maine 12th in Population (1830)		February 15, 1843
24	Perry Smith (D-CT)		Connecticut 16th in Population (1830)
25	Richard Montgomery Young (D-IL)		Illinois 20th in Population (1830)
26	Clement Comer Clay (D-AL)	June 19, 1837			November 15, 1841
27	William Duhurst Merrick (W-MD)	January 4, 1838
28	Albert Smith White (W-IN)	March 4, 1839	Former Representative
29	Benjamin Tappan (D-OH)		Ohio 4th in Population (1830)
30	Samuel Shethar Phelps (W-VT)		Vermont 17th in Population (1830)
31	John Henderson (W-MS)		Mississippi 22nd in Population (1830)
32	Nathan Fellows Dixon (W-RI)		Rhode Island 23rd in Population (1830)		January 29, 1842
33	Daniel Sturgeon (D-PA)	January 14, 1840
34	Augustus Seymour Porter (W-MI)	January 20, 1840
35	Jabez Williams Huntington (W-CT)	May 4, 1840
36	Willie Person Mangum (W-NC)	November 25, 1840	Former Senator
37	William Alexander Graham (W-NC)	November 25, 1840
38	Alfred Osborn Pope Nicholson (D-TN)	December 25, 1840			February 7, 1842
39	John Leeds Kerr (W-MD)	January 5, 1841
40	Isaac Chapman Bates (W-MA)	January 13, 1841
41	Rufus Choate (W-MA)	February 23, 1841
42	Levi Woodbury (D-NH)	March 4, 1841	Former Senator (5 years)
43	John Macpherson Berrien (W-GA)		Former Senator (4 years)
44	William Segar Archer (W-VA)		Former Representative (15 years)
45	George Evans (W-ME)		Former Representative (11 years)
46	William Woodbridge (W-MI)		Former Delegate (1 year)
47	James Turner Morehead (W-KY)		Former Governor
48	Jacob Welsh Miller (W-NJ)		New Jersey 14th in Population (1830)
49	Alexander Barrow (W-LA)		Louisiana 19th in Population (1830)
50	Samuel McRoberts (D-IL)		Illinois 20th in Population (1830)
51	James Fowler Simmons (W-RI)		Rhode Island 23rd in Population (1830)
	Arthur Pendleton Bagby (D-AL)	November 24, 1841
	William Sprague (W-RI)	February 18, 1842
	Leonard Wilcox (D-NH)	March 1, 1842
	John Jordan Crittenden (W-KY)	March 31, 1842
	Charles Magill Conrad (W-LA)	April 14, 1842
	Samuel Chandler Crafts (W-VT)	April 23, 1842
	William Lewis Dayton (W-NJ)	July 2, 1842
	George McDuffie (D-SC)	December 23, 1842
52	Open Seat (TN)	N/A

28th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	William Rufus de Vane King (D-AL)	December 14, 1819			April 15, 1844
2	Thomas Hart Benton (D-MO)	August 10, 1821
3	Silas Wright, Jr. (D-NY)	January 4, 1833			November 26, 1844
4	Nathaniel Pitcher Tallmadge (W-NY)	March 4, 1833			November 26, 1844
5	Lewis Fields Linn (D-MO)	October 25, 1833			October 3, 1843
6	James Buchanan (D-PA)	December 6, 1834
7	Robert John Walker (D-MS)	March 4, 1835
8	William Cabell Rives (W-VA)	March 4, 1836
9	Richard Henry Bayard (W-DE)	June 17, 1836
10	Ambrose Hundley Sevier (D-AR)	September 18, 1836	Former Delegate
11	William Savin Fulton (D-AR)	September 18, 1836			August 15, 1844
12	Thomas Clayton (W-DE)	January 9, 1837
13	William Allen (D-OH)	March 4, 1837
14	William Duhurst Merrick (W-MD)	January 4, 1838
15	Albert Smith White (W-IN)	March 4, 1839	Former Representative
16	Benjamin Tappan (D-OH)		Ohio 4th in Population (1830)
17	Samuel Shethar Phelps (W-VT)		Vermont 17th in Population (1830)
18	John Henderson (W-MS)		Mississippi 22nd in Population (1830)
19	Daniel Sturgeon (D-PA)	January 14, 1840
20	Augustus Seymour Porter (W-MI)	January 20, 1840
21	Jabez Williams Huntington (W-CT)	May 4, 1840
22	Willie Person Mangum (W-NC)	November 25, 1840
23	Isaac Chapman Bates (W-MA)	January 13, 1841
24	Rufus Choate (W-MA)	February 23, 1841
25	Levi Woodbury (D-NH)	March 4, 1841	Former Senator (5 years)
26	John Macpherson Berrien (W-GA)		Former Senator (4 years)
27	William Segar Archer (W-VA)		Former Representative (15 years)
28	George Evans (W-ME)		Former Representative (11 years)
29	William Woodbridge (W-MI)		Former Delegate (1 year)
30	James Turner Morehead (W-KY)		Former Governor
31	Jacob Welsh Miller (W-NJ)		New Jersey 14th in Population (1830)
32	Alexander Barrow (W-LA)		Louisiana 19th in Population (1830)
33	Samuel McRoberts (D-IL)		Illinois 20th in Population (1830)		March 27, 1843
34	James Fowler Simmons (W-RI)		Rhode Island 23rd in Population (1830)
35	Arthur Pendleton Bagby (D-AL)	November 24, 1841
36	William Sprague (W-RI)	February 18, 1842			January 17, 1844
37	John Jordan Crittenden (W-KY)	March 31, 1842
38	William Lewis Dayton (W-NJ)	July 2, 1842
39	George McDuffie (D-SC)	December 23, 1842
40	John Milton Niles (D-CT)	March 4, 1843	Former Senator
41	James Alfred Pearce (W-MD)		Former Representative (6 years)	Maryland 15th in Population (1840)
42	Charles Gordon Atherton (D-NH)		Former Representative (6 years)	New Hampshire 22nd in Population (1840)
43	Edward Allen Hannegan (D-IN)		Former Representative (4 years)
44	Walter Terry Colquitt (D-GA)		Former Representative (2 years)
45	William Henry Haywood, Jr. (D-NC)		North Carolina 7th in Population (1840)
46	Daniel Elliott Huger (D-SC)		South Carolina 11th in Population (1840)
47	Sidney Breese (D-IL)		Illinois 14th in Population (1840)
48	William Upham (W-VT)		Vermont 21st in Population (1840)
	David Rice Atchison (D-MO)	October 14, 1843
49	Ephraim Hubbard Foster (W-TN)	October 17, 1843	Former Senator
50	Spencer Jarnagin (W-TN)	October 17, 1843
51	John Fairfield (D-ME)	October 17, 1843	Former Representative
	James Semple (D-IL)	October 17, 1843
	John Brown Francis (LO-RI)	January 25, 1844
52	Henry Johnson (D-LA)	February 12, 1844
	Dixon Hall Lewis (D-AL)	April 22, 1844
	Chester Ashley (D-AR)	November 8, 1844
	Henry Allen Foster (D-NY)	November 30, 1843	Former Representative		January 27, 1845
	Daniel Stevens Dickinson (D-NY)	November 30, 1843
	John Adams Dix (D-NY)	January 27, 1845
53	Open Seat (FL)	N/A
54	Open Seat (FL)	N/A

29th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Thomas Hart Benton (D-MO)	August 10, 1821
2	James Buchanan (D-PA)	December 6, 1834			March 5, 1845
3	Robert John Walker (D-MS)	March 4, 1835			March 5, 1845
4	Ambrose Hundley Sevier (D-AR)	September 18, 1836
5	Thomas Clayton (W-DE)	January 9, 1837
6	William Allen (D-OH)	March 4, 1837
7	Samuel Shethar Phelps (W-VT)	March 4, 1839
8	Daniel Sturgeon (D-PA)	January 14, 1840
9	Jabez Williams Huntington (W-CT)	May 4, 1840
10	Willie Person Mangum (W-NC)	November 25, 1840
11	Isaac Chapman Bates (W-MA)	January 13, 1841			March 16, 1845
12	Levi Woodbury (D-NH)	March 4, 1841	Former Senator (5 years)		November 20, 1845
13	John Macpherson Berrien (W-GA)		Former Senator (4 years)
14	William Segar Archer (W-VA)		Former Representative (15 years)
15	George Evans (W-ME)		Former Representative (11 years)
16	William Woodbridge (W-MI)		Former Delegate (1 year)
17	James Turner Morehead (W-KY)		Former Governor
18	Jacob Welsh Miller (W-NJ)		New Jersey 14th in Population (1830)
19	Alexander Barrow (W-LA)		Louisiana 19th in Population (1830)		December 29, 1846
20	James Fowler Simmons (W-RI)		Rhode Island 23rd in Population (1830)
21	Arthur Pendleton Bagby (D-AL)	November 24, 1841
22	John Jordan Crittenden (W-KY)	March 31, 1842
23	William Lewis Dayton (W-NJ)	July 2, 1842
24	George McDuffie (D-SC)	December 23, 1842			August 17, 1846
25	John Milton Niles (D-CT)	March 4, 1843	Former Senator
26	James Alfred Pearce (W-MD)		Former Representative (6 years)	Maryland 15th in Population (1840)
27	Charles Gordon Atherton (D-NH)		Former Representative (6 years)	New Hampshire 22nd in Population (1840)
28	Edward Allen Hannegan (D-IN)		Former Representative (4 years)
29	Walter Terry Colquitt (D-GA)		Former Representative (2 years)
30	William Henry Haywood, Jr. (D-NC)		North Carolina 7th in Population (1840)		July 25, 1846
31	Sidney Breese (D-IL)		Illinois 14th in Population (1840)
32	William Upham (W-VT)		Vermont 21st in Population (1840)
33	David Rice Atchison (D-MO)	October 14, 1843
34	Spencer Jarnagin (W-TN)	October 17, 1843
35	John Fairfield (D-ME)	December 4, 1843	Former Representative
36	James Semple (D-IL)	December 4, 1843
37	Henry Johnson (D-LA)	February 12, 1844
38	Dixon Hall Lewis (D-AL)	April 22, 1844
39	Chester Ashley (D-AR)	November 8, 1844
40	Daniel Stevens Dickinson (D-NY)	November 30, 1843
41	John Adams Dix (D-NY)	January 27, 1845
42	Daniel Webster (W-MA)	March 4, 1845	Former Senator (13 years)
43	John Middleton Clayton (W-DE)		Former Senator (7 years)
44	Thomas Corwin (W-OH)		Former Representative (9 years)
45	Jesse Speight (D-MS)		Former Representative (8 years)
46	Hopkins Lacy Turney (D-TN)		Former Representative (6 years)
47	Lewis Cass (D-MI)		Former Cabinet Member
48	Jesse David Bright (D-IN)		Indiana 10th in Population (1840)
49	Reverdy Johnson (W-MD)		Maryland 15th in Population (1840)
50	Albert Collins Greene (W-RI)		Rhode Island 24th in Population (1840)
	Simon Cameron (D-PA)	March 13, 1845
	John Davis (W-MA)	March 24, 1845
51	David Levy Yulee (D-FL)	March 24, 1845	Former Delegate
52	James Diament Westcott, Jr. (D-FL)	March 24, 1845
	Joseph Williams Chalmers (D-MS)	November 3, 1845
53	John Caldwell Calhoun (D-SC)	November 26, 1845
	Benning Wentworth Jenness (D-NH)	December 1, 1845			June 13, 1846
54	Isaac Samuels Pennybacker (D-VA)	December 3, 1845			January 12, 1847
55	Samuel Houston (D-TX)	February 21, 1846	Former Representative
56	Thomas Jefferson Rusk (D-TX)	February 21, 1846
	Joseph Cilley (L-NH)	June 13, 1846
	George Edmund Badger (W-NC)	November 25, 1846
	Andrew Pickens Butler (D-SC)	December 4, 1846
	James Murray Mason (D-VA)	January 21, 1847	Former Representative
	Pierre Soulé (D-LA)	January 21, 1847
57	Open Seat (IA)	N/A
58	Open Seat (IA)	N/A

30th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Thomas Hart Benton (D-MO)	August 10, 1821
2	Ambrose Hundley Sevier (D-AR)	September 18, 1836			March 15, 1848
3	William Allen (D-OH)	March 4, 1837
4	Samuel Shethar Phelps (W-VT)	March 4, 1839
5	Daniel Sturgeon (D-PA)	January 14, 1840
6	Jabez Williams Huntington (W-CT)	May 4, 1840			November 1, 1847
7	Willie Person Mangum (W-NC)	November 25, 1840
8	John Macpherson Berrien (W-GA)	March 4, 1841	Former Senator
9	Jacob Welsh Miller (W-NJ)	March 4, 1841
10	Arthur Pendleton Bagby (D-AL)	November 24, 1841			June 16, 1848
11	John Jordan Crittenden (W-KY)	March 31, 1842			June 12, 1848
12	William Lewis Dayton (W-NJ)	July 2, 1842
13	John Milton Niles (D-CT)	March 4, 1843	Former Senator
14	James Alfred Pearce (W-MD)		Former Representative (6 years)	Maryland 15th in Population (1840)
15	Charles Gordon Atherton (D-NH)		Former Representative (6 years)	New Hampshire 22nd in Population (1840)
16	Edward Allen Hannegan (D-IN)		Former Representative (4 years)
17	Walter Terry Colquitt (D-GA)		Former Representative (2 years)		February 4, 1848
18	Sidney Breese (D-IL)		Illinois 14th in Population (1840)
19	William Upham (W-VT)		Vermont 21st in Population (1840)
20	David Rice Atchison (D-MO)	October 14, 1843
21	John Fairfield (D-ME)	December 4, 1843			December 24, 1847
22	Henry Johnson (D-LA)	February 12, 1844
23	Dixon Hall Lewis (D-AL)	April 22, 1844			October 25, 1848
24	Chester Ashley (D-AR)	November 8, 1844			April 29, 1848
25	Daniel Stevens Dickinson (D-NY)	November 30, 1843
26	John Adams Dix (D-NY)	January 27, 1845
27	Daniel Webster (W-MA)	March 4, 1845	Former Senator (13 years)
28	John Middleton Clayton (W-DE)		Former Senator (7 years)		February 23, 1849
29	Thomas Corwin (W-OH)		Former Representative (9 years)
30	Jesse Speight (D-MS)		Former Representative (8 years)		May 1, 1847
31	Hopkins Lacy Turney (D-TN)		Former Representative (6 years)
32	Lewis Cass (D-MI)		Former Cabinet Member		May 29, 1848
33	Jesse David Bright (D-IN)		Indiana 10th in Population (1840)
34	Reverdy Johnson (W-MD)		Maryland 15th in Population (1840)
35	Albert Collins Greene (W-RI)		Rhode Island 24th in Population (1840)
36	Simon Cameron (D-PA)	March 13, 1845
37	John Davis (W-MA)	March 24, 1845
38	David Levy Yulee (D-FL)	March 24, 1845	Former Delegate
39	James Diament Westcott, Jr. (D-FL)	March 24, 1845
40	John Caldwell Calhoun (D-SC)	November 26, 1845
41	Samuel Houston (D-TX)	February 21, 1846	Former Representative
42	Thomas Jefferson Rusk (D-TX)	February 21, 1846
43	George Edmund Badger (W-NC)	November 25, 1846
44	Andrew Pickens Butler (D-SC)	December 4, 1846
45	James Murray Mason (D-VA)	January 21, 1847
46	Robert Mercer Taliaferro Hunter (D-VA)	March 4, 1847	Former Representative (8 years)	Virginia 4th in Population (1840)
47	Joseph Rogers Underwood (W-KY)		Former Representative (8 years)	Kentucky 6th in Population (1840)
48	Stephen Arnold Douglas (D-IL)		Former Representative (4 years)
49	John Parker Hale (ID-NH)		Former Representative (2 years)
50	Alpheus Felch (D-MI)		Former Governor
51	James Ware Bradbury (D-ME)		Maine 13th in Population (1840)
52	Henry Stuart Foote (D-MS)		Mississippi 17th in Population (1840)
53	Solomon Weathersbee Downs (D-LA)		Louisiana 19th in Population (1840)
54	John Hopkins Clarke (W-RI)		Rhode Island 24th in Population (1840)
55	Presley Spruance (W-DE)		Delaware 26th in Population (1840)
	Jefferson Davis (D-MS)	August 27, 1847
	Roger Sherman Baldwin (W-CT)	November 11, 1847
56	John Bell (W-TN)	November 22, 1847
	Wyman Bradbury Seavy Moor (D-ME)	January 5, 1848			June 7, 1848
	Herschel Vespasian Johnson (W-GA)	February 4, 1848
	Solon Borland (D-AR)	March 30, 1848
	William King Sebastian (D-AR)	May 12, 1848
	Hannibal Hamlin (D-ME)	June 8, 1848	Former Representative/Delegate (4 years)	Maine 13th in Population (1840)
57	Henry Dodge (D-WI)		Former Representative/Delegate (4 years)	Wisconsin 29th in Population (1840)
	Thomas Fitzgerald (D-MI)		Michigan 23rd in Population (1840)
58	Isaac Pigeon Walker (D-WI)		Wisconsin 29th in Population (1840)
	Thomas Metcalfe (W-KY)	June 23, 1848
	William Rufus de Vane King (D-AL)	July 1, 1848
	Benjamin Fitzpatrick (D-AL)	November 25, 1848
59	Augustus Caesar Dodge (D-IA)	December 7, 1848	Former Delegate (6 years)
60	George Wallace Jones (D-IA)	December 7, 1848	Former Delegate (3 years)
	John Wales (W-DE)	February 3, 1849
	Pierre Soulé (D-LA)	March 3, 1849

31st Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Thomas Hart Benton (D-MO)	August 10, 1821
2	Samuel Shethar Phelps (W-VT)	March 4, 1839
3	Daniel Sturgeon (D-PA)	January 14, 1840
4	Willie Person Mangum (W-NC)	November 25, 1840
5	John Macpherson Berrien (W-GA)	March 4, 1841	Former Senator
6	Jacob Welsh Miller (W-NJ)	March 4, 1841
7	William Lewis Dayton (W-NJ)	July 2, 1842
8	James Alfred Pearce (W-MD)	March 4, 1843	Former Representative
9	William Upham (W-VT)	March 4, 1843
10	David Rice Atchison (D-MO)	October 14, 1843
11	Daniel Stevens Dickinson (D-NY)	November 30, 1843
12	Daniel Webster (W-MA)	March 4, 1845	Former Senator		July 22, 1850
13	Thomas Corwin (W-OH)		Former Representative (9 years)		July 20, 1850
14	Hopkins Lacy Turney (D-TN)		Former Representative (6 years)
15	Jesse David Bright (D-IN)		Indiana 10th in Population (1840)
16	Reverdy Johnson (W-MD)		Maryland 15th in Population (1840)		March 7, 1849
17	Albert Collins Greene (W-RI)		Rhode Island 24th in Population (1840)
18	John Davis (W-MA)	March 24, 1845
19	David Levy Yulee (D-FL)	July 1, 1845
20	John Caldwell Calhoun (D-SC)	November 26, 1845			March 31, 1850
21	Samuel Houston (D-TX)	February 21, 1846	Former Representative
22	Thomas Jefferson Rusk (D-TX)	February 21, 1846
23	George Edmund Badger (W-NC)	November 25, 1846
24	Andrew Pickens Butler (D-SC)	December 4, 1846
25	James Murray Mason (D-VA)	January 21, 1847
26	Robert Mercer Taliaferro Hunter (D-VA)	March 4, 1847	Former Representative (8 years)	Virginia 4th in Population (1840)
27	Joseph Rogers Underwood (W-KY)		Former Representative (8 years)	Kentucky 6th in Population (1840)
28	Stephen Arnold Douglas (D-IL)		Former Representative (4 years)
29	John Parker Hale (FS-NH)		Former Representative (2 years)
30	Alpheus Felch (D-MI)		Former Governor
31	James Ware Bradbury (D-ME)		Maine 13th in Population (1840)
32	Henry Stuart Foote (D-MS)		Mississippi 17th in Population (1840)
33	Solomon Weathersbee Downs (D-LA)		Louisiana 19th in Population (1840)
34	John Hopkins Clarke (W-RI)		Rhode Island 24th in Population (1840)
35	Presley Spruance (W-DE)		Delaware 26th in Population (1840)
36	Jefferson Davis (D-MS)	August 27, 1847
37	Roger Sherman Baldwin (W-CT)	November 11, 1847
38	John Bell (W-TN)	November 22, 1847
39	Solon Borland (D-AR)	March 30, 1848
40	William King Sebastian (D-AR)	May 12, 1848
41	Hannibal Hamlin (D-ME)	June 8, 1848	Former Representative/Delegate (4 years)	Maine 13th in Population (1840)
42	Henry Dodge (D-WI)		Former Representative/Delegate (4 years)	Wisconsin 29th in Population (1840)
43	Isaac Pigeon Walker (D-WI)
44	William Rufus de Vane King (D-AL)	July 1, 1848
45	Benjamin Fitzpatrick (D-AL)	November 25, 1848			November 30, 1849
46	Augustus Caesar Dodge (D-IA)	December 7, 1848	Former Delegate (6 years)
47	George Wallace Jones (D-IA)	December 7, 1848	Former Delegate (3 years)
48	John Wales (W-DE)	February 3, 1849
49	Pierre Soulé (D-LA)	March 3, 1849
50	Henry Clay (W-KY)	March 4, 1849	Former Senator (10 years)
51	Lewis Cass (D-MI)		Former Senator (3 years)
52	Truman Smith (W-CT)		Former Representative (8 years)
53	William Crosby Dawson (W-GA)		Former Representative (5 years)
54	James Cooper (W-PA)		Former Representative (4 years)	Pennsylvania 2nd in Population (1840)
55	Moses Norris, Jr. (D-NH)		Former Representative (4 years)	New Hampshire 22nd in Population (1840)
56	William Henry Seward (W-NY)		Former Governor	New York 1st in Population (1840)
57	James Whitcomb (D-IN)		Former Governor	Indiana 10th in Population (1840)
58	Salmon Portland Chase (FS-OH)		Ohio 3rd in Population (1840)
59	Jackson Morton (W-FL)		Florida 27th in Population (1840)
60	James Shields (D-IL)	October 27, 1849
	Jeremiah Clemens (D-AL)	November 30, 1849
	David Stewart (W-MD)	December 6, 1849			January 12, 1850
	Thomas George Pratt (W-MD)	January 12, 1850
	Franklin Harper Elmore (D-SC)	April 11, 1850			May 29, 1850
	Robert Woodward Barnwell (D-SC)	June 4, 1850			December 8, 1850
	Thomas Ewing (W-OH)	July 20, 1850
	Robert Charles Winthrop (D-MA)	July 30, 1850			February 1, 1851
61	William McKendree Gwin (D-CA)	September 10, 1850	Former Representative
62	John Charles Frémont (D-CA)	September 10, 1850
	Robert Barnwell Rhett (D-SC)	December 18, 1850
	Robert Rantoul, Jr. (W-MA)	Feburary 1, 1851

32nd Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Willie Person Mangum (W-NC)	November 25, 1840
2	John Macpherson Berrien (W-GA)	March 4, 1841	Former Senator		May 28, 1852
3	Jacob Welsh Miller (W-NJ)	March 4, 1841
4	James Alfred Pearce (W-MD)	March 4, 1843	Former Representative
5	William Upham (W-VT)	March 4, 1843			January 14, 1853
6	David Rice Atchison (D-MO)	October 14, 1843
7	Jesse David Bright (D-IN)	March 4, 1845
8	John Davis (W-MA)	March 24, 1845
9	Samuel Houston (D-TX)	February 21, 1846	Former Representative
10	Thomas Jefferson Rusk (D-TX)	February 21, 1846
11	George Edmund Badger (W-NC)	November 25, 1846
12	Andrew Pickens Butler (D-SC)	December 4, 1846
13	James Murray Mason (D-VA)	January 21, 1847
14	Robert Mercer Taliaferro Hunter (D-VA)	March 4, 1847	Former Representative (8 years)	Virginia 4th in Population (1840)
15	Joseph Rogers Underwood (W-KY)		Former Representative (8 years)	Kentucky 6th in Population (1840)
16	Stephen Arnold Douglas (D-IL)		Former Representative (4 years)
17	John Parker Hale (ID-NH)		Former Representative (2 years)
18	Alpheus Felch (D-MI)		Former Governor
19	James Ware Bradbury (D-ME)		Maine 13th in Population (1840)
20	Henry Stuart Foote (D-MS)		Mississippi 17th in Population (1840)		January 8, 1852
21	Solomon Weathersbee Downs (D-LA)		Louisiana 19th in Population (1840)
22	John Hopkins Clarke (W-RI)		Rhode Island 24th in Population (1840)
23	Presley Spruance (W-DE)		Delaware 26th in Population (1840)
24	Jefferson Davis (D-MS)	August 27, 1847			September 23, 1851
25	John Bell (W-TN)	November 22, 1847
26	Solon Borland (D-AR)	March 30, 1848
27	William King Sebastian (D-AR)	May 12, 1848
28	Hannibal Hamlin (D-ME)	June 8, 1848	Former Representative/Delegate (4 years)	Maine 13th in Population (1840)
29	Henry Dodge (D-WI)		Former Representative/Delegate (4 years)	Wisconsin 29th in Population (1840)
30	Isaac Pigeon Walker (D-WI)
31	William Rufus de Vane King (D-AL)	July 1, 1848			December 20, 1852
32	Augustus Caesar Dodge (D-IA)	December 7, 1848	Former Delegate (6 years)
33	George Wallace Jones (D-IA)	December 7, 1848	Former Delegate (3 years)
34	Pierre Soulé (D-LA)	March 3, 1849
35	Henry Clay (W-KY)	March 4, 1849	Former Senator (10 years)		June 29, 1852
36	Lewis Cass (D-MI)		Former Senator (3 years)
37	Truman Smith (W-CT)		Former Representative (8 years)
38	William Crosby Dawson (W-GA)		Former Representative (5 years)
39	James Cooper (W-PA)		Former Representative (4 years)	Pennsylvania 2nd in Population (1840)
40	Moses Norris, Jr. (D-NH)		Former Representative (4 years)	New Hampshire 22nd in Population (1840)
41	William Henry Seward (W-NY)		Former Governor	New York 1st in Population (1840)
42	James Whitcomb (D-IN)		Former Governor	Indiana 10th in Population (1840)	October 4, 1852
43	Salmon Portland Chase (FS-OH)		Ohio 3rd in Population (1840)
44	Jackson Morton (W-FL)		Florida 27th in Population (1840)
45	James Shields (D-IL)	October 27, 1849
46	Jeremiah Clemens (D-AL)	November 30, 1849
47	Thomas George Pratt (W-MD)	January 12, 1850
48	William McKendree Gwin (D-CA)	September 10, 1850
49	Robert Barnwell Rhett (D-SC)	December 18, 1850			May 7, 1852
50	Richard Brodhead (D-PA)	March 4, 1851	Former Representative (6 years)
51	Solomon Foot (W-VT)		Former Representative (4 years)
52	Hamilton Fish (W-NY)		Former Representative (2 years)
53	James Chamberlain Jones (W-TN)		Former Governor
54	Henry Sheffie Geyer (W-MO)		Missouri 16th in Population (1840)
55	Robert Field Stockton (D-NJ)		New Jersey 18th in Population (1840)		January 10, 1853
56	Charles Tillinghast James (D-RI)		Rhode Island 24th in Population (1840)
57	James Asheton Bayard, Jr. (D-DE)		Delaware 26th in Population (1840)
58	Stephen Russell Mallory (D-FL)		Florida 27th in Population (1840)
59	Benjamin Franklin Wade (W-OH)	March 15, 1851
60	Charles Sumner (FS-MA)	April 24, 1851
	John Jones McRae (D-MS)	December 1, 1851			March 17, 1852
61	John B. Weller (D-CA)	January 30, 1852
	Walker Brooke (W-MS)	February 18, 1852
	Stephen Adams (D-MS)	March 17, 1852
	William Ford De Saussure (D-SC)	May 10, 1852
62	Isaac Toucey (D-CT)	May 12, 1852
	Robert Milledge Charlton (D-GA)	May 31, 1852
	David Meriweather (D-KY)	July 6, 1852			August 31, 1852
	Archibald Dixon (W-KY)	September 1, 1852
	Charles William Cathcart (D-IN)	December 6, 1852			January 18, 1853
	Benjamin Fitzpatrick (D-AL)	January 14, 1853
	Samuel Shethar Phelps (W-VT)	January 17, 1853
	John Pettit (D-IN)	January 18, 1853

33rd Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	James Alfred Pearce (W-MD)	March 4, 1843
2	David Rice Atchison (D-MO)	October 14, 1843
3	Jesse David Bright (D-IN)	March 4, 1845
4	Samuel Houston (D-TX)	February 21, 1846	Former Representative
5	Thomas Jefferson Rusk (D-TX)	February 21, 1846
6	George Edmund Badger (W-NC)	November 25, 1846
7	Andrew Pickens Butler (D-SC)	December 4, 1846
8	James Murray Mason (D-VA)	January 21, 1847
9	Robert Mercer Taliaferro Hunter (D-VA)	March 4, 1847	Former Representative (8 years)
10	Stephen Arnold Douglas (D-IL)	March 4, 1847	Former Representative (4 years)
11	John Bell (W-TN)	November 22, 1847
12	Solon Borland (D-AR)	March 30, 1848			April 11, 1853
13	William King Sebastian (D-AR)	May 12, 1848
14	Hannibal Hamlin (D-ME)	June 8, 1848	Former Representative/Delegate (4 years)	Maine 13th in Population (1840)
15	Henry Dodge (D-WI)		Former Representative/Delegate (4 years)	Wisconsin 29th in Population (1840)
16	Isaac Pigeon Walker (D-WI)
17	Augustus Caesar Dodge (D-IA)	December 7, 1848	Former Delegate (6 years)		February 22, 1855
18	George Wallace Jones (D-IA)	December 7, 1848	Former Delegate (3 years)
19	Pierre Soulé (D-LA)	March 3, 1849			April 11, 1853
20	Lewis Cass (D-MI)	March 4, 1849	Former Senator
21	Truman Smith (W-CT)		Former Representative (8 years)		May 24, 1854
22	William Crosby Dawson (W-GA)		Former Representative (5 years)
23	James Cooper (W-PA)		Former Representative (4 years)	Pennsylvania 2nd in Population (1840)
24	Moses Norris, Jr. (D-NH)		Former Representative (4 years)	New Hampshire 22nd in Population (1840)	January 11, 1855
25	William Henry Seward (W-NY)		Former Governor
26	Salmon Portland Chase (FS-OH)		Ohio 3rd in Population (1840)
27	Jackson Morton (W-FL)		Florida 27th in Population (1840)
28	James Shields (D-IL)	October 27, 1849
29	Thomas George Pratt (W-MD)	January 12, 1850
30	William McKendree Gwin (D-CA)	September 10, 1850
31	Richard Brodhead (D-PA)	March 4, 1851	Former Representative (6 years)
32	Solomon Foot (W-VT)		Former Representative (4 years)
33	Hamilton Fish (W-NY)		Former Representative (2 years)
34	James Chamberlain Jones (W-TN)		Former Governor
35	Henry Sheffie Geyer (W-MO)		Missouri 16th in Population (1840)
36	Charles Tillinghast James (D-RI)		Rhode Island 24th in Population (1840)
37	James Asheton Bayard, Jr. (D-DE)		Delaware 26th in Population (1840)
38	Stephen Russell Mallory (D-FL)		Florida 27th in Population (1840)
39	Benjamin Franklin Wade (W-OH)	March 15, 1851
40	Charles Sumner (FS-MA)	April 24, 1851
41	John B. Weller (D-CA)	January 30, 1852
42	Stephen Adams (D-MS)	March 17, 1852
43	Isaac Toucey (D-CT)	May 12, 1852
44	Archibald Dixon (W-KY)	September 1, 1852
45	Benjamin Fitzpatrick (D-AL)	January 14, 1853
46	Samuel Shethar Phelps (W-VT)	January 17, 1853			March 16, 1854
47	John Pettit (D-IN)	January 18, 1853
48	John Middleton Clayton (W-DE)	March 4, 1853	Former Senator (11 years)
49	Charles Gordon Atherton (D-NH)		Former Senator (6 years)		November 15, 1853
50	Edward Everett (W-MA)		Former Representative (10 years)		June 1, 1854
51	Robert Augustus Toombs (W-GA)		Former Representative (8 years)
52	William Wright (D-NJ)		Former Representative (4 years)
53	Charles Edward Stuart (D-MI)		Former Representative (3 years)
54	John Burton Thompson (W-KY)		Former Representative (2 years)
55	Josiah James Evans (D-SC)		South Carolina 14th in Population (1850)
56	Judah Philip Benjamin (W-LA)		Louisiana 18th in Population (1850)
57	John Renshaw Thomson (D-NJ)		New Jersey 19th in Population (1850)
	Robert Ward Johnson (D-AR)	July 6, 1853
58	Philip Allen (D-RI)	July 20, 1853
	Jared Warner Williams (D-NH)	November 29, 1853	Former Representative		July 15, 1854
59	Clement Claiborne Clay, Jr. (D-AL)	November 29, 1853
	John Slidell (D-LA)	December 5, 1853
60	Albert Gallatin Brown (D-MS)	January 7, 1854
61	William Pitt Fessenden (W-ME)	February 10, 1854
	Francis Gillette (FS-CT)	May 24, 1854
	Julius Rockwell (W-MA)	June 3, 1854			January 31, 1855
	Lawrence Brainerd (FS-VT)	October 14, 1854
62	David Settle Reid (D-NC)	December 6, 1854
	John Sullivan Wells (D-NH)	January 16, 1855
	Henry Wilson (FS-MA)	January 31, 1855

34th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	James Alfred Pearce (O-MD)	March 4, 1843
2	Jesse David Bright (D-IN)	March 4, 1845
3	Samuel Houston (A-TX)	February 21, 1846	Former Representative
4	Thomas Jefferson Rusk (D-TX)	February 21, 1846
5	Andrew Pickens Butler (D-SC)	December 4, 1846
6	James Murray Mason (D-VA)	January 21, 1847
7	Robert Mercer Taliaferro Hunter (D-VA)	March 4, 1847	Former Representative (8 years)
8	Stephen Arnold Douglas (D-IL)	March 4, 1847	Former Representative (4 years)
9	John Bell (O-TN)	November 22, 1847
10	William King Sebastian (D-AR)	May 12, 1848
11	Hannibal Hamlin (D-ME)	June 8, 1848	Maine 13th in Population (1840)		January 7, 1857
12	Henry Dodge (D-WI)	June 8, 1848	Wisconsin 29th in Population (1840)
13	George Wallace Jones (D-IA)	December 7, 1848
14	Lewis Cass (D-MI)	March 4, 1849	Former Senator
15	William Henry Seward (O-NY)	March 4, 1849
16	Thomas George Pratt (O-MD)	January 12, 1850
17	William McKendree Gwin (D-CA)	September 10, 1850
18	Richard Brodhead (D-PA)	March 4, 1851	Former Representative (6 years)
19	Solomon Foot (O-VT)		Former Representative (4 years)
20	Hamilton Fish (O-NY)		Former Representative (2 years)
21	James Chamberlain Jones (O-TN)		Former Governor
22	Henry Sheffie Geyer (O-MO)		Missouri 16th in Population (1840)
23	Charles Tillinghast James (D-RI)		Rhode Island 24th in Population (1840)
24	James Asheton Bayard, Jr. (D-DE)		Delaware 26th in Population (1840)
25	Stephen Russell Mallory (D-FL)		Florida 27th in Population (1840)
26	Benjamin Franklin Wade (O-OH)	March 15, 1851
27	Charles Sumner (O-MA)	April 24, 1851
28	John B. Weller (D-CA)	January 30, 1852
29	Stephen Adams (D-MS)	March 17, 1852
30	Isaac Toucey (D-CT)	May 12, 1852
31	Benjamin Fitzpatrick (D-AL)	January 14, 1853
32	John Middleton Clayton (O-DE)	March 4, 1853	Former Senator		November 9, 1856
33	Robert Augustus Toombs (D-GA)		Former Representative (8 years)
34	William Wright (D-NJ)		Former Representative (4 years)
35	Charles Edward Stuart (D-MI)		Former Representative (3 years)
36	John Burton Thompson (O-KY)		Former Representative (2 years)
37	Josiah James Evans (D-SC)		South Carolina 14th in Population (1850)
38	Judah Philip Benjamin (O-LA)		Louisiana 18th in Population (1850)
39	John Renshaw Thomson (D-NJ)		New Jersey 19th in Population (1850)
40	Robert Ward Johnson (D-AR)	July 6, 1853
41	Philip Allen (D-RI)	July 20, 1853
42	Clement Claiborne Clay, Jr. (D-AL)	November 29, 1853
43	John Slidell (D-LA)	December 5, 1853
44	Albert Gallatin Brown (D-MS)	January 7, 1854
45	William Pitt Fessenden (O-ME)	February 10, 1854
46	David Settle Reid (D-NC)	December 6, 1854
47	Henry Wilson (O-MA)	January 31, 1855
48	John Jordan Crittenden (O-KY)	March 4, 1855	Former Senator (14 years)
49	David Levy Yulee (D-FL)		Former Senator (5 years)
50	Jacob Collamer (O-VT)		Former Representative (6 years)
51	Charles Durkee (O-WI)		Former Representative (4 years)
52	Alfred Iverson, Sr. (D-GA)		Former Representative (2 years)	Georgia 9th in Population (1850)
53	Asa Biggs (D-NC)		Former Representative (2 years)	North Carolina 10th in Population (1850)
54	George Ellis Pugh (D-OH)		Ohio 3rd in Population (1850)
55	Lyman Trumbull (D-IL)		Illinois 11th in Population (1850)
56	Lafayette Sabine Foster (O-CT)		Connecticut 21st in Population (1850)
57	James Bell (O-NH)		New Hampshire 22nd in Population (1850)
58	John Parker Hale (O-NH)	July 30, 1855
59	James Harlan (O-IA)	December 31, 1855
60	William Bigler (D-PA)	January 14, 1856
	Joseph Parsons Comegys (O-DE)	November 19, 1856			January 14, 1857
61	James Stephen Green (D-MO)	January 12, 1857
	Martin Waltham Bates (O-DE)	January 14, 1857
	Amos Nourse (O-ME)	January 16, 1857
62	Graham Newell Fitch (D-IN)	February 4, 1857

35th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	James Alfred Pearce (D-MD)	March 4, 1843
2	Jesse David Bright (D-IN)	March 4, 1845
3	Samuel Houston (A-TX)	February 21, 1846	Former Representative
4	Thomas Jefferson Rusk (D-TX)	February 21, 1846			July 29, 1857
5	Andrew Pickens Butler (D-SC)	December 4, 1846			May 25, 1857
6	James Murray Mason (D-VA)	January 21, 1847
7	Robert Mercer Taliaferro Hunter (D-VA)	March 4, 1847	Former Representative (8 years)
8	Stephen Arnold Douglas (D-IL)	March 4, 1847	Former Representative (4 years)
9	John Bell (A-TN)	November 22, 1847
10	William King Sebastian (D-AR)	May 12, 1848
11	George Wallace Jones (D-IA)	December 7, 1848
12	William Henry Seward (R-NY)	March 4, 1849
13	William McKendree Gwin (D-CA)	September 10, 1850
14	Solomon Foot (R-VT)	March 4, 1851	Former Representative
15	James Asheton Bayard, Jr. (D-DE)		Delaware 26th in Population (1840)
16	Stephen Russell Mallory (D-FL)		Florida 27th in Population (1840)
17	Benjamin Franklin Wade (R-OH)	March 15, 1851
18	Charles Sumner (R-MA)	April 24, 1851
19	Benjamin Fitzpatrick (D-AL)	January 14, 1853
20	Robert Augustus Toombs (D-GA)	March 4, 1853	Former Representative (8 years)
21	William Wright (D-NJ)		Former Representative (4 years)
22	Charles Edward Stuart (D-MI)		Former Representative (3 years)
23	John Burton Thompson (A-KY)		Former Representative (2 years)
24	Josiah James Evans (D-SC)		South Carolina 14th in Population (1850)		May 6, 1858
25	Judah Philip Benjamin (D-LA)		Louisiana 18th in Population (1850)
26	John Renshaw Thomson (D-NJ)		New Jersey 19th in Population (1850)
27	Robert Ward Johnson (D-AR)	July 6, 1853
28	Philip Allen (D-RI)	July 20, 1853
29	Clement Claiborne Clay, Jr. (D-AL)	November 29, 1853
30	John Slidell (D-LA)	December 5, 1853
31	Albert Gallatin Brown (D-MS)	January 7, 1854
32	William Pitt Fessenden (R-ME)	February 10, 1854
33	David Settle Reid (D-NC)	December 6, 1854
34	Henry Wilson (R-MA)	January 31, 1855
35	John Jordan Crittenden (A-KY)	March 4, 1855	Former Senator (14 years)
36	David Levy Yulee (D-FL)		Former Senator (5 years)
37	Jacob Collamer (R-VT)		Former Representative (6 years)
38	Charles Durkee (R-WI)		Former Representative (4 years)
39	Alfred Iverson, Sr. (D-GA)		Former Representative (2 years)	Georgia 9th in Population (1850)
40	Asa Biggs (D-NC)		Former Representative (2 years)	North Carolina 10th in Population (1850)	May 5, 1858
41	George Ellis Pugh (D-OH)		Ohio 3rd in Population (1850)
42	Lyman Trumbull (R-IL)		Illinois 11th in Population (1850)
43	Lafayette Sabine Foster (R-CT)		Connecticut 21st in Population (1850)
44	James Bell (R-NH)		New Hampshire 22nd in Population (1850)		May 26, 1857
45	John Parker Hale (R-NH)	July 30, 1855
46	James Harlan (R-IA)	December 31, 1855
47	William Bigler (D-PA)	January 14, 1856
48	James Stephen Green (D-MO)	January 12, 1857
49	Martin Waltham Bates (O-DE)	January 14, 1857
50	Graham Newell Fitch (D-IN)	February 4, 1857
51	Hannibal Hamlin (R-ME)	March 4, 1857	Former Senator (8 years)
52	James Fowler Simmons (R-RI)		Former Senator (6 years)
53	Jefferson Davis (D-MS)		Former Senator (4 years)
54	Simon Cameron (R-PA)		Former Senator (3 years)
55	Preston King (R-NY)		Former Representative (8 years)
56	James Dixon (R-CT)		Former Representative (4 years)
57	Trusten Polk (D-MO)		Missouri 13th in Population (1850)
58	Anthony Kennedy (A-MD)		Maryland 17th in Population (1850)
59	Zachariah Chandler (R-MI)		Michigan 20th in Population (1850)
60	James Rood Doolittle (R-WI)		Wisconsin 24th in Population (1850)
61	David Colbreth Broderick (D-CA)		California 29th in Population (1850)
	Daniel Clark (R-NH)	June 27, 1857
62	Andrew Johnson (D-TN)	October 8, 1857
	James Pinckney Henderson (D-TX)	November 9, 1857			June 4, 1858
	James Henry Hammond (D-SC)	December 7, 1857
	Thomas Lanier Clingman (D-NC)	May 7, 1858
63	James Shields (D-MN)	May 11, 1858	Former Senator
64	Henry Mower Rice (D-MN)		Former Delegate
	Arthur Peronneau Hayne (D-SC)				December 2, 1858
	Matthias Ward (D-TX)	September 27, 1858
	James Chesnut, Jr. (D-SC)	December 3, 1858
65	Joseph Lane (D-OR)	February 14, 1859	Former Delegate
66	Delazon Smith (D-OR)	February 14, 1859

36th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	James Alfred Pearce (D-MD)	March 4, 1843
2	Jesse David Bright (D-IN)	March 4, 1845
3	James Murray Mason (D-VA)	January 21, 1847
4	Robert Mercer Taliaferro Hunter (D-VA)	March 4, 1847	Former Representative (8 years)
5	Stephen Arnold Douglas (D-IL)	March 4, 1847	Former Representative (4 years)
6	William King Sebastian (D-AR)	May 12, 1848
7	William Henry Seward (R-NY)	March 4, 1849
8	William McKendree Gwin (D-CA)	September 10, 1850
9	Solomon Foot (R-VT)	March 4, 1851	Former Representative
10	James Asheton Bayard, Jr. (D-DE)		Delaware 26th in Population (1840)
11	Stephen Russell Mallory (D-FL)		Florida 27th in Population (1840)		January 21, 1861
12	Benjamin Franklin Wade (R-OH)	March 15, 1851
13	Charles Sumner (R-MA)	April 24, 1851
14	Benjamin Fitzpatrick (D-AL)	January 14, 1853			January 21, 1861
15	Robert Augustus Toombs (D-GA)	March 4, 1853	Former Representative		February 4, 1861
16	Judah Philip Benjamin (D-LA)		Louisiana 18th in Population (1850)		February 4, 1861
17	John Renshaw Thomson (D-NJ)		New Jersey 19th in Population (1850)
18	Robert Ward Johnson (D-AR)	July 6, 1853
19	Clement Claiborne Clay, Jr. (D-AL)	November 29, 1853			January 21, 1861
20	John Slidell (D-LA)	December 5, 1853			February 4, 1861
21	Albert Gallatin Brown (D-MS)	January 7, 1854			January 12, 1861
22	William Pitt Fessenden (R-ME)	February 10, 1854
23	Henry Wilson (R-MA)	January 31, 1855
24	John Jordan Crittenden (A-KY)	March 4, 1855	Former Senator (14 years)
25	David Levy Yulee (D-FL)		Former Senator (5 years)		January 21, 1861
26	Jacob Collamer (R-VT)		Former Representative (6 years)
27	Charles Durkee (R-WI)		Former Representative (4 years)
28	Alfred Iverson, Sr. (D-GA)		Former Representative (2 years)		January 28, 1861
29	George Ellis Pugh (D-OH)		Ohio 3rd in Population (1850)
30	Lyman Trumbull (R-IL)		Illinois 11th in Population (1850)
31	Lafayette Sabine Foster (R-CT)		Connecticut 21st in Population (1850)
32	John Parker Hale (R-NH)	July 30, 1855
33	James Harlan (R-IA)	December 31, 1855
34	William Bigler (D-PA)	January 14, 1856
35	James Stephen Green (D-MO)	January 12, 1857
36	Graham Newell Fitch (D-IN)	February 4, 1857
37	Hannibal Hamlin (R-ME)	March 4, 1857	Former Senator (8 years)		January 17, 1861
38	James Fowler Simmons (R-RI)		Former Senator (6 years)
39	Jefferson Davis (D-MS)		Former Senator (4 years)		January 21, 1861
40	Simon Cameron (R-PA)		Former Senator (3 years)
41	Preston King (R-NY)		Former Representative (8 years)
42	James Dixon (R-CT)		Former Representative (4 years)
43	Trusten Polk (D-MO)		Missouri 13th in Population (1850)
44	Anthony Kennedy (A-MD)		Maryland 17th in Population (1850)
45	Zachariah Chandler (R-MI)		Michigan 20th in Population (1850)
46	James Rood Doolittle (R-WI)		Wisconsin 24th in Population (1850)
47	David Colbreth Broderick (D-CA)		California 29th in Population (1850)		September 16, 1859
48	Daniel Clark (R-NH)	June 27, 1857
49	Andrew Johnson (D-TN)	October 8, 1857
50	James Henry Hammond (D-SC)	December 7, 1857			November 11, 1860
51	Thomas Lanier Clingman (D-NC)	May 7, 1858
52	Henry Mower Rice (D-MN)	May 11, 1858
53	Matthias Ward (D-TX)	September 27, 1858			December 5, 1859
54	James Chesnut, Jr. (D-SC)	December 3, 1858			November 10, 1860
55	Joseph Lane (D-OR)	February 14, 1859	Former Delegate
56	Delazon Smith (D-OR)	February 14, 1859			April 3, 1859
57	Alfred Osborn Pope Nicholson (D-TN)	March 4, 1859	Former Senator
58	Kinsley Scott Bingham (R-MI)		Former Representative
59	Lazarus Whitehead Powell (D-KY)		Former Governor	Kentucky 8th in Population (1850)
60	Thomas Bragg (D-NC)			North Carolina 10th in Population (1850)
61	James Wilson Grimes (R-IA)			Iowa 27th in Population (1850)
62	Henry Bowen Anthony (R-RI)			Rhode Island 28th in Population (1850)
63	John Conover Ten Eyck (R-NJ)		New Jersey 19th in Population (1850)
64	John Hemphill (D-TX)		Texas 25th in Population (1850)
65	Willard Saulsbury, Sr. (D-DE)		Delaware 30th in Population (1850)
66	Morton Smith Wilkinson (R-MN)		Minnesota 33rd in Population (1850)
	Henry Peter Haun (D-CA)	November 3, 1859			March 4, 1860
	Louis Trezevant Wigfall (D-TX)	December 5, 1859
	Milton Slocum Latham (D-CA)	January 11, 1860
	Edward Dickinson Baker (R-OR)	October 2, 1860
	Lot Myrick Morrill (R-ME)	January 17, 1861
67	Open Seat (KS)	N/A
68	Open Seat (KS)	N/A

37th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	James Alfred Pearce (D-MD)	March 4, 1843			December 20, 1862
2	Jesse David Bright (D-IN)	March 4, 1845			February 5, 1862
3	James Murray Mason (D-VA)	January 21, 1847			March 28, 1861
4	Robert Mercer Taliaferro Hunter (D-VA)	March 4, 1847	Former Representative (8 years)		March 28, 1861
5	Stephen Arnold Douglas (D-IL)	March 4, 1847	Former Representative (4 years)		June 3, 1861
6	William King Sebastian (D-AR)	May 12, 1848			July 11, 1861
7	Solomon Foot (R-VT)	March 4, 1851	Former Representative
8	James Asheton Bayard, Jr. (D-DE)	March 4, 1851
9	Benjamin Franklin Wade (R-OH)	March 15, 1851
10	Charles Sumner (R-MA)	April 24, 1851
11	John Renshaw Thomson (D-NJ)	March 4, 1853			September 12, 1862
12	William Pitt Fessenden (R-ME)	February 10, 1854
13	Henry Wilson (R-MA)	January 31, 1855
14	Jacob Collamer (R-VT)	March 4, 1855	Former Representative
15	Lyman Trumbull (R-IL)		Illinois 11th in Population (1850)
16	Lafayette Sabine Foster (R-CT)		Connecticut 21st in Population (1850)
17	John Parker Hale (R-NH)	July 30, 1855
18	James Harlan (R-IA)	December 31, 1855
19	James Fowler Simmons (R-RI)	March 4, 1857	Former Senator (6 years)		September 5, 1862
20	Simon Cameron (R-PA)		Former Senator (3 years)		March 4, 1861
21	Preston King (R-NY)		Former Representative (8 years)
22	James Dixon (R-CT)		Former Representative (4 years)
23	Trusten Polk (D-MO)		Missouri 13th in Population (1850)		January 10, 1862
24	Anthony Kennedy (U-MD)		Maryland 17th in Population (1850)
25	Zachariah Chandler (R-MI)		Michigan 20th in Population (1850)
26	James Rood Doolittle (R-WI)		Wisconsin 24th in Population (1850)
27	Daniel Clark (R-NH)	June 27, 1857
28	Andrew Johnson (D-TN)	October 8, 1857			March 4, 1862
29	Thomas Lanier Clingman (D-NC)	May 7, 1858			March 28, 1861
30	Henry Mower Rice (D-MN)	May 11, 1858
31	Kinsley Scott Bingham (R-MI)	March 4, 1859	Former Representative		October 5, 1861
32	Lazarus Whitehead Powell (D-KY)		Former Governor	Kentucky 8th in Population (1850)
33	Thomas Bragg (D-NC)			North Carolina 10th in Population (1850)	March 6, 1861
34	James Wilson Grimes (R-IA)			Iowa 27th in Population (1850)
35	Henry Bowen Anthony (R-RI)			Rhode Island 28th in Population (1850)
36	John Conover Ten Eyck (R-NJ)		New Jersey 19th in Population (1850)
37	John Hemphill (D-TX)		Texas 25th in Population (1850)		July 11, 1861
38	Willard Saulsbury, Sr. (D-DE)		Delaware 30th in Population (1850)
39	Morton Smith Wilkinson (R-MN)		Minnesota 33rd in Population (1850)
40	Louis Trezevant Wigfall (D-TX)	December 5, 1859			March 23, 1861
41	Milton Slocum Latham (D-CA)	January 11, 1860
42	Edward Dickinson Baker (R-OR)	October 2, 1860			October 21, 1861
43	Lot Myrick Morrill (R-ME)	January 17, 1861
44	Salmon Portland Chase (R-OH)	March 4, 1861	Former Senator		March 6, 1861
45	John Cabell Breckinridge (D-KY)		Former Representative (4 years)		December 4, 1861
46	Henry Smith Lane (R-IN)		Former Representative (2 years, 7 months)
47	James Alexander McDougall (D-CA)		Former Representative (2 years, 0 months)
48	Ira Harris (R-NY)		New York 1st in Population (1850)
49	Edgar Cowan (R-PA)		Pennsylvania 2nd in Population (1850)
50	Timothy Otis Howe (R-WI)		Wisconsin 24th in Population (1850)
51	Charles Burton Mitchel (D-AR)		Arkansas 26th in Population (1850)		July 11, 1861
52	James Willis Nesmith (D-OR)		Oregon 33rd in Population (1850)
	David Wilmot (R-PA)	March 14, 1861
53	Waldo Porter Johnson (D-MO)	March 17, 1861			January 10, 1862
	John Sherman (R-OH)	March 21, 1861
54	James Henry Lane (R-KS)	April 4, 1861	Former Representative
55	Samuel Clarke Pomeroy (R-KS)	April 4, 1861
	Orville Hickman Browning (R-IL)	June 26, 1861			January 12, 1863
	John Snyder Carlile (U-VA)	July 9, 1861	Former Representative
	Waitman Thomas Willey (U-VA)	July 9, 1861
	Benjamin Stark (D-OR)	October 29, 1861			September 12, 1862
	Garrett Davis (U-KY)	December 10, 1861
	Jacob Merritt Howard (R-MI)	January 17, 1862	Former Representative
	John Brooks Henderson (U-MO)		Alphabetical (H)
	Robert Wilson (U-MO)		Alphabetical (W)
	Joseph Albert Wright (U-IN)	February 24, 1862			January 14, 1863
	Benjamin Franklin Harding (D-OR)	September 12, 1862
	Richard Stockton Field (R-NJ)	November 21, 1862			January 14, 1863
	Samuel Greene Arnold (R-RI)	December 1, 1862
	Thomas Holliday Hicks (U-MD)	December 29, 1862
	David Turpie (D-IN)	January 14, 1863	Indiana 7th in Population (1850)
	James Walter Wall (D-NJ)	January 14, 1863	New Jersey 19th in Population (1850)
	William Alexander Richardson (D-IL)	January 30, 1863
56	Open Seat (TN)	N/A
57	Open Seat (GA)
58	Open Seat (GA)
59	Open Seat (AL)
60	Open Seat (AL)
61	Open Seat (SC)
62	Open Seat (SC)
63	Open Seat (MS)
64	Open Seat (MS)
65	Open Seat (LA)
66	Open Seat (LA)
67	Open Seat (FL)
68	Open Seat (FL)

38th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Solomon Foot (R-VT)	March 4, 1851	Former Representative
2	James Asheton Bayard, Jr. (D-DE)	March 4, 1851			January 29, 1864
3	Benjamin Franklin Wade (R-OH)	March 15, 1851
4	Charles Sumner (R-MA)	April 24, 1851
5	William Pitt Fessenden (R-ME)	February 10, 1854			July 1, 1864
6	Henry Wilson (R-MA)	January 31, 1855
7	Jacob Collamer (R-VT)	March 4, 1855	Former Representative
8	Lyman Trumbull (R-IL)		Illinois 11th in Population (1850)
9	Lafayette Sabine Foster (R-CT)		Connecticut 21st in Population (1850)
10	John Parker Hale (R-NH)	July 30, 1855
11	James Harlan (R-IA)	December 31, 1855
12	James Dixon (R-CT)	March 4, 1857	Former Representative
13	Zachariah Chandler (R-MI)		Michigan 20th in Population (1850)
14	James Rood Doolittle (R-WI)		Wisconsin 24th in Population (1850)
15	Daniel Clark (R-NH)	June 27, 1857
16	Lazarus Whitehead Powell (D-KY)	March 4, 1859	Former Governor	Kentucky 8th in Population (1850)
17	James Wilson Grimes (R-IA)			Iowa 27th in Population (1850)
18	Henry Bowen Anthony (R-RI)			Rhode Island 28th in Population (1850)
19	John Conover Ten Eyck (R-NJ)		New Jersey 19th in Population (1850)
20	Willard Saulsbury, Sr. (D-DE)		Delaware 30th in Population (1850)
21	Morton Smith Wilkinson (R-MN)		Minnesota 33rd in Population (1850)
22	Lot Myrick Morrill (R-ME)	January 17, 1861
23	Henry Smith Lane (R-IN)	March 4, 1861	Former Representative (2 years, 7 months)
24	James Alexander McDougall (D-CA)		Former Representative (2 years, 0 months)
25	Ira Harris (R-NY)		New York 1st in Population (1850)
26	Edgar Cowan (R-PA)		Pennsylvania 2nd in Population (1850)
27	Timothy Otis Howe (R-WI)		Wisconsin 24th in Population (1850)
28	James Willis Nesmith (D-OR)		Oregon 33rd in Population (1850)
29	John Sherman (R-OH)	March 21, 1861
30	James Henry Lane (R-KS)	April 4, 1861	Former Representative
31	Samuel Clarke Pomeroy (R-KS)	April 4, 1861
32	John Snyder Carlile (U-VA)	July 9, 1861
33	Garrett Davis (U-KY)	December 10, 1861
34	Jacob Merritt Howard (R-MI)	January 17, 1862	Former Representative
35	John Brooks Henderson (U-MO)		Alphabetical (H)
36	Robert Wilson (U-MO)		Alphabetical (W)		November 13, 1863
37	Benjamin Franklin Harding (D-OR)	September 12, 1862
38	Thomas Holliday Hicks (U-MD)	December 29, 1862			February 14, 1865
39	William Alexander Richardson (D-IL)	January 30, 1863
40	Reverdy Johnson (U-MD)	March 4, 1863	Former Senator
41	Alexander Ramsey (R-MN)		Former Representative (4 years)	Former Governor
42	Thomas Andrews Hendricks (D-IN)			Indiana 5th in Population (1860)
43	William Wright (D-NJ)			New Jersey 21st in Population (1860)
44	Edwin Denison Morgan (R-NY)		Former Governor	New York 1st in Population (1860)
45	William Sprague (R-RI)		Former Governor	Rhode Island 29th in Population (1860)
46	Charles Rollin Buckalew (D-PA)		Pennsylvania 2nd in Population (1860)
47	Lemuel Jackson Bowden (U-VA)		Virginia 7th in Population (1860)		January 2, 1864
48	John Conness (R-CA)		California 26th in Population (1860)
49	Waitman Thomas Willey (UU-WV)	August 4, 1863	Former Senator
50	Peter Godwin Van Winkle (UU-WV)	August 4, 1863
	Benjamin Gratz Brown (UU-MO)	November 13, 1863
	George Read Riddle (D-DE)	February 2, 1864
	Nathan Allen Farwell (R-ME)	October 27, 1864
51	James Warren Nye (R-NV)	February 1, 1865	Alphabetical (N)
52	William Morris Stewart (R-NV)	February 1, 1865	Alphabetical (S)
53	Open Seat (TN)	N/A
54	Open Seat (TN)
55	Open Seat (GA)
56	Open Seat (GA)
57	Open Seat (NC)
58	Open Seat (NC)
59	Open Seat (AL)
60	Open Seat (AL)
61	Open Seat (MS)
62	Open Seat (MS)
63	Open Seat (LA)
64	Open Seat (LA)
65	Open Seat (SC)
66	Open Seat (SC)
67	Open Seat (TX)
68	Open Seat (TX)
69	Open Seat (AR)
70	Open Seat (AR)
71	Open Seat (FL)
72	Open Seat (FL)

39th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Solomon Foot (R-VT)	March 4, 1851			March 28, 1866
2	Benjamin Franklin Wade (R-OH)	March 15, 1851
3	Charles Sumner (R-MA)	April 24, 1851
4	Henry Wilson (R-MA)	January 31, 1855
5	Jacob Collamer (R-VT)	March 4, 1855	Former Representative		November 9, 1865
6	Lyman Trumbull (R-IL)		Illinois 11th in Population (1850)
7	Lafayette Sabine Foster (R-CT)		Connecticut 21st in Population (1850)
8	James Harlan (R-IA)	December 31, 1855			May 15, 1865
9	James Dixon (R-CT)	March 4, 1857	Former Representative
10	Zachariah Chandler (R-MI)		Michigan 20th in Population (1850)
11	James Rood Doolittle (R-WI)		Wisconsin 24th in Population (1850)
12	Daniel Clark (R-NH)	June 27, 1857			July 27, 1866
13	James Wilson Grimes (R-IA)	March 4, 1859	Former Governor	Iowa 27th in Population (1850)
14	Henry Bowen Anthony (R-RI)		Former Governor	Rhode Island 28th in Population (1850)
15	Willard Saulsbury, Sr. (D-DE)
16	Lot Myrick Morrill (R-ME)	January 17, 1861
17	Henry Smith Lane (R-IN)	March 4, 1861	Former Representative (2 years, 7 months)
18	James Alexander McDougall (D-CA)		Former Representative (2 years, 0 months)
19	Ira Harris (R-NY)		New York 1st in Population (1850)
20	Edgar Cowan (R-PA)		Pennsylvania 2nd in Population (1850)
21	Timothy Otis Howe (R-WI)		Wisconsin 24th in Population (1850)
22	James Willis Nesmith (D-OR)		Oregon 33rd in Population (1850)
23	John Sherman (R-OH)	March 21, 1861
24	James Henry Lane (R-KS)	April 4, 1861	Former Representative		July 11, 1866
25	Samuel Clarke Pomeroy (R-KS)	April 4, 1861
26	Garrett Davis (U-KY)	December 10, 1861
27	Jacob Merritt Howard (R-MI)	January 17, 1862	Former Representative
28	John Brooks Henderson (U-MO)	January 17, 1862
29	Reverdy Johnson (U-MD)	March 4, 1863	Former Senator
30	Alexander Ramsey (R-MN)		Former Representative (4 years)	Former Governor
31	Thomas Andrews Hendricks (D-IN)			Indiana 5th in Population (1860)
32	William Wright (D-NJ)			New Jersey 21st in Population (1860)	November 1, 1866
33	Edwin Denison Morgan (R-NY)		Former Governor	New York 1st in Population (1860)
34	William Sprague (R-RI)		Former Governor	Rhode Island 29th in Population (1860)
35	Charles Rollin Buckalew (D-PA)		Pennsylvania 2nd in Population (1860)
36	John Conness (R-CA)		California 26th in Population (1860)
37	Waitman Thomas Willey (UU-WV)	August 4, 1863	Former Senator
38	Peter Godwin Van Winkle (UU-WV)	August 4, 1863
39	Benjamin Gratz Brown (UU-MO)	November 13, 1863
40	George Read Riddle (D-DE)	February 2, 1864
41	James Warren Nye (R-NV)	February 1, 1865	Alphabetical (N)
42	William Morris Stewart (R-NV)	February 1, 1865	Alphabetical (S)
43	William Pitt Fessenden (R-ME)	March 3, 1865	Former Senator
44	Richard Yates (R-IL)		Former Representative (4 years)	Former Governor
45	Aaron Harrison Cragin (R-NH)		Former Representative (4 years)
46	James Guthrie (D-KY)		Kentucky 9th in Population (1860)
47	Daniel Sheldon Norton (R-KY)		Minnesota 31st in Population (1860)
48	George Henry Williams (R-OR)		Oregon 35th in Population (1860)
49	John Angel James Creswell (UU-MD)	March 9, 1865
50	John Potter Stockton (D-NJ)	March 15, 1865			March 27, 1866
	Luke Potter Poland (R-VT)	November 21, 1865
	Samuel Jordan Kirkwood (R-IA)	January 13, 1866
	George Franklin Edmunds (R-VT)	April 3, 1866
	Edmund Gibson Ross (R-KS)	July 19, 1866
51	Joseph Smith Fowler (UU-TN)	July 24, 1866	Alphabetical (F)
52	David Trotter Patterson (U-TN)	July 24, 1866	Alphabetical (P)
	George Gilman Fogg (R-NH)	August 31, 1866
	Alexander Gilmore Cattell (R-NJ)	September 19, 1866
	Frederick Theodore Frelinghuysen (R-NJ)	November 12, 1866
53	John Milton Thayer (R-NE)	March 1, 1867	Alphabetical (Th)
54	Thomas Weston Tipton (R-NE)	March 1, 1867	Alphabetical (Ti)
55	Open Seat (VA)	N/A
56	Open Seat (VA)
57	Open Seat (GA)
58	Open Seat (GA)
59	Open Seat (NC)
60	Open Seat (NC)
61	Open Seat (AL)
62	Open Seat (AL)
63	Open Seat (MS)
64	Open Seat (MS)
65	Open Seat (LA)
66	Open Seat (LA)
67	Open Seat (SC)
68	Open Seat (SC)
69	Open Seat (TX)
70	Open Seat (TX)
71	Open Seat (AR)
72	Open Seat (AR)
73	Open Seat (FL)
74	Open Seat (FL)

40th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Benjamin Franklin Wade (R-OH)	March 15, 1851
2	Charles Sumner (R-MA)	April 24, 1851
3	Henry Wilson (R-MA)	January 31, 1855
4	Lyman Trumbull (R-IL)	March 4, 1855
5	James Dixon (R-CT)	March 4, 1857	Former Representative
6	Zachariah Chandler (R-MI)		Michigan 20th in Population (1850)
7	James Rood Doolittle (R-WI)		Wisconsin 24th in Population (1850)
8	James Wilson Grimes (R-IA)	March 4, 1859	Former Governor	Iowa 27th in Population (1850)
9	Henry Bowen Anthony (R-RI)		Former Governor	Rhode Island 28th in Population (1850)
10	Willard Saulsbury, Sr. (D-DE)
11	Lot Myrick Morrill (R-ME)	January 17, 1861
12	Timothy Otis Howe (R-WI)	March 4, 1861
13	John Sherman (R-OH)	March 21, 1861
14	Samuel Clarke Pomeroy (R-KS)	April 4, 1861
15	Garrett Davis (D-KY)	December 10, 1861
16	Jacob Merritt Howard (R-MI)	January 17, 1862	Former Representative
17	John Brooks Henderson (R-MO)	January 17, 1862
18	Reverdy Johnson (R-MD)	March 4, 1863	Former Senator		July 10, 1868
19	Alexander Ramsey (R-MN)		Former Representative (4 years)	Former Governor
20	Thomas Andrews Hendricks (D-IN)		Former Representative (4 years)
21	Edwin Denison Morgan (R-NY)		Former Governor	New York 1st in Population (1860)
22	William Sprague (R-RI)		Former Governor	Rhode Island 29th in Population (1860)
23	Charles Rollin Buckalew (D-PA)		Pennsylvania 2nd in Population (1860)
24	John Conness (R-CA)		California 26th in Population (1860)
25	Waitman Thomas Willey (R-WV)	August 4, 1863	Former Senator
26	Peter Godwin Van Winkle (R-WV)	August 4, 1863
27	George Read Riddle (D-DE)	February 2, 1864			March 29, 1867
28	James Warren Nye (R-NV)	February 1, 1865	Alphabetical (N)
29	William Morris Stewart (R-NV)	February 1, 1865	Alphabetical (S)
30	William Pitt Fessenden (R-ME)	March 3, 1865	Former Senator
31	Richard Yates (R-IL)		Former Representative (4 years)	Former Governor
32	Aaron Harrison Cragin (R-NH)		Former Representative (4 years)
33	James Guthrie (D-KY)		Kentucky 9th in Population (1860)		February 7, 1868
34	Daniel Sheldon Norton (R-KY)		Minnesota 31st in Population (1860)
35	George Henry Williams (R-OR)		Oregon 35th in Population (1860)
36	George Franklin Edmunds (R-VT)	April 3, 1866
37	Edmund Gibson Ross (R-KS)	July 19, 1866
38	Joseph Smith Fowler (R-TN)	July 24, 1866	Alphabetical (F)
39	David Trotter Patterson (D-TN)	July 24, 1866	Alphabetical (P)
40	Alexander Gilmore Cattell (R-NJ)	September 19, 1866
41	Frederick Theodore Frelinghuysen (R-NJ)	November 12, 1866
42	John Milton Thayer (R-NE)	March 1, 1867	Alphabetical (Th)
43	Thomas Weston Tipton (R-NE)	March 1, 1867	Alphabetical (Ti)
44	James Harlan (R-IA)	March 4, 1867	Former Senator (10 years)
45	Simon Cameron (R-PA)		Former Senator (7 years)
46	Justin Smith Morrill (R-VT)		Former Representative (12 years)
47	Roscoe Conkling (R-NY)		Former Representative (6 years)
48	James Willis Patterson (R-NH)		Former Representative (4 years)
49	Orris Sanford Ferry (R-CT)		Former Representative (2 years)	Connecticut 24th in Population (1860)
50	Cornelius Cole (R-CA)		Former Representative (2 years)	California 26th in Population (1860)
51	Oliver Hazard Perry Throck Morton (R-IN)		Former Governor
52	Charles Daniel Drake (R-MO)		Missouri 8th in Population (1860)
53	Henry Winslow Corbett (R-OR)		Oregon 35th in Population (1860)
	James Asheton Bayard, Jr. (D-DE)	April 5, 1867
	Thomas Clay McCreery (D-DE)	February 19, 1868
54	George Vickers (D-MD)	March 7, 1868
55	Adonijah Strong Welch (R-FL)	June 17, 1868
56	Alexander McDonald (R-AR)	June 22, 1868
57	Benjamin Franklin Rice (R-AR)	June 23, 1868
58	Thomas Ward Osborn (R-FL)	June 25, 1868
59	John Spafford Harris (R-LA)	July 8, 1868
60	William Pitt Kellogg (R-LA)	July 9, 1868
61	George Eliphaz Spencer (R-AL)	July 13, 1868	Alabama 13th in Population (1860)	Alphabetical (S)
62	Willard Warner (R-AL)		Alabama 13th in Population (1860)	Alphabetical (W)
	William Pinkney Whyte (D-MD)		Maryland 19th in Population (1860)
63	Joseph Carter Abbott (R-NC)	July 14, 1860	Alphabetical (A)
64	John Pool (R-NC)	July 14, 1860	Alphabetical (P)
65	Thomas James Robertson (R-SC)	July 15, 1860
66	Frederick Adolphus Sawyer (R-SC)	July 16, 1860
67	Open Seat (VA)	N/A
68	Open Seat (VA)
69	Open Seat (GA)
70	Open Seat (GA)
71	Open Seat (MS)
72	Open Seat (MS)
73	Open Seat (TX)
74	Open Seat (TX)

41st Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Charles Sumner (R-MA)	April 24, 1851
2	Henry Wilson (R-MA)	January 31, 1855
3	Lyman Trumbull (R-IL)	March 4, 1855
4	Zachariah Chandler (R-MI)	March 4, 1857
5	James Wilson Grimes (R-IA)	March 4, 1859	Former Governor	Iowa 27th in Population (1850)	December 6, 1869
6	Henry Bowen Anthony (R-RI)		Former Governor	Rhode Island 28th in Population (1850)
7	Willard Saulsbury, Sr. (D-DE)
8	Timothy Otis Howe (R-WI)	March 4, 1861
9	John Sherman (R-OH)	March 21, 1861
10	Samuel Clarke Pomeroy (R-KS)	April 4, 1861
11	Garrett Davis (D-KY)	December 10, 1861
12	Jacob Merritt Howard (R-MI)	January 17, 1862
13	Alexander Ramsey (R-MN)	March 4, 1863	Former Representative
14	William Sprague (R-RI)	March 4, 1863
15	Waitman Thomas Willey (R-WV)	August 4, 1863
16	James Warren Nye (R-NV)	February 1, 1865	Alphabetical (N)
17	William Morris Stewart (R-NV)	February 1, 1865	Alphabetical (S)
18	William Pitt Fessenden (R-ME)	March 3, 1865	Former Senator		September 8, 1869
19	Richard Yates (R-IL)		Former Representative (4 years)	Former Governor
20	Aaron Harrison Cragin (R-NH)		Former Representative (4 years)
21	Daniel Sheldon Norton (R-KY)		Minnesota 31st in Population (1860)		July 13, 1870
22	George Henry Williams (R-OR)		Oregon 35th in Population (1860)
23	George Franklin Edmunds (R-VT)	April 3, 1866
24	Edmund Gibson Ross (R-KS)	July 19, 1866
25	Joseph Smith Fowler (R-TN)	July 24, 1866
26	Alexander Gilmore Cattell (R-NJ)	September 19, 1866
27	John Milton Thayer (R-NE)	March 1, 1867	Alphabetical (Th)
28	Thomas Weston Tipton (R-NE)	March 1, 1867	Alphabetical (Ti)
29	James Harlan (R-IA)	March 4, 1867	Former Senator (10 years)
30	Simon Cameron (R-PA)		Former Senator (7 years)
31	Justin Smith Morrill (R-VT)		Former Representative (12 years)
32	Roscoe Conkling (R-NY)		Former Representative (6 years)
33	James Willis Patterson (R-NH)		Former Representative (4 years)
34	Orris Sanford Ferry (R-CT)		Former Representative (2 years)	Connecticut 24th in Population (1860)
35	Cornelius Cole (R-CA)		Former Representative (2 years)	California 26th in Population (1860)
36	Oliver Hazard Perry Throck Morton (R-IN)		Former Governor
37	Charles Daniel Drake (R-MO)		Missouri 8th in Population (1860)		December 19, 1870
38	Henry Winslow Corbett (R-OR)		Oregon 35th in Population (1860)
39	Thomas Clay McCreery (D-DE)	February 19, 1868
40	George Vickers (D-MD)	March 7, 1868
41	Alexander McDonald (R-AR)	June 22, 1868
42	Benjamin Franklin Rice (R-AR)	June 23, 1868
43	Thomas Ward Osborn (R-FL)	June 25, 1868
44	John Spafford Harris (R-LA)	July 8, 1868
45	William Pitt Kellogg (R-LA)	July 9, 1868
46	George Eliphaz Spencer (R-AL)	July 13, 1868	Alphabetical (S)
47	Willard Warner (R-AL)	July 13, 1868	Alphabetical (W)
48	Joseph Carter Abbott (R-NC)	July 14, 1860	Alphabetical (A)
49	John Pool (R-NC)	July 14, 1860	Alphabetical (P)
50	Thomas James Robertson (R-SC)	July 15, 1860
51	Frederick Adolphus Sawyer (R-SC)	July 16, 1860
52	Hannibal Hamlin (R-ME)	March 4, 1869	Former Senator (12 years)
53	John Potter Stockton (R-NJ)		Former Senator (1 year)
54	Reuben Eaton Fenton (R-NY)		Former Representative (9 years)
55	William Thomas Hamilton (D-MD)		Former Representative (6 years)
56	Allen Granberry Thurman (D-OH)		Former Representative (2 years)
57	William Gannaway Brownlow (R-TN)		Former Governor	Tennessee 10th in Population (1860)
58	William Alfred Buckingham (R-CT)			Connecticut 24th in Population (1860)
59	Arthur Inghram Boreman (R-WV)			West Virginia 27th in Population (1860)
60	John Scott (R-PA)		Pennsylvania 2nd in Population (1860)
61	Daniel Darwin Pratt (R-IN)		Indiana 5th in Population (1860)
62	Carl Schurz (R-MO)		Missouri 8th in Population (1860)
63	Matthew Hale Carpenter (R-WI)		Wisconsin 15th in Population (1860)
64	Eugene Casserly (D-CA)		California 26th in Population (1860)
65	Abijah Gilbert (R-FL)		Florida 32nd in Population (1860)
66	Thomas Francis Bayard, Sr. (D-DE)		Delaware 33rd in Population (1860)
	Lot Myrick Morrill (R-DE)	October 30, 1869
	James Bruen Howell (R-IA)	January 18, 1870
67	John Warfield Johnston (D-VA)	January 26, 1870	Alphabetical (J)
68	John Francis Lewis (R-VA)	January 26, 1870	Alphabetical (L)
69	Adelbert Ames (R-MS)	February 23, 1870	Former Governor
70	Hiram Rhodes Revels (R-MS)	February 23, 1870
71	James Winright Flanagan (R-TX)	March 30, 1870
72	Morgan Calvin Hamilton (R-TX)	March 31, 1870
	William Windom (R-MN)	July 15, 1870			January 22, 1871
	Daniel Tarbox Jewett (R-MO)	December 19, 1870			January 20, 1871
	Francis Preston Blair, Jr. (D-MO)	January 20, 1871
	Ozora Pierson Stearns (R-MO)	January 23, 1871
73	Joshua Hill (R-GA)	February 1, 1871
74	Homer Virgil Milton Miller (R-GA)	February 24, 1871

42nd Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Charles Sumner (R-MA)	April 24, 1851
2	Henry Wilson (R-MA)	January 31, 1855
3	Lyman Trumbull (R-IL)	March 4, 1855
4	Zachariah Chandler (R-MI)	March 4, 1857
5	Henry Bowen Anthony (R-RI)	March 4, 1859
6	Timothy Otis Howe (R-WI)	March 4, 1861
7	John Sherman (R-OH)	March 21, 1861
8	Samuel Clarke Pomeroy (R-KS)	April 4, 1861
9	Garrett Davis (D-KY)	December 10, 1861			September 22, 1872
10	Alexander Ramsey (R-MN)	March 4, 1863	Former Representative
11	William Sprague (R-RI)	March 4, 1863
12	James Warren Nye (R-NV)	February 1, 1865	Alphabetical (N)
13	William Morris Stewart (R-NV)	February 1, 1865	Alphabetical (S)
14	Aaron Harrison Cragin (R-NH)	March 3, 1865
15	George Franklin Edmunds (R-VT)	April 3, 1866
16	Thomas Weston Tipton (R-NE)	March 1, 1867
17	James Harlan (R-IA)	March 4, 1867	Former Senator (10 years)
18	Simon Cameron (R-PA)		Former Senator (7 years)
19	Justin Smith Morrill (R-VT)		Former Representative (12 years)
20	Roscoe Conkling (R-NY)		Former Representative (6 years)
21	James Willis Patterson (R-NH)		Former Representative (4 years)
22	Orris Sanford Ferry (R-CT)		Former Representative (2 years)	Connecticut 24th in Population (1860)
23	Cornelius Cole (R-CA)		Former Representative (2 years)	California 26th in Population (1860)
24	Oliver Hazard Perry Throck Morton (R-IN)		Former Governor
25	Henry Winslow Corbett (R-OR)
26	George Vickers (D-MD)	March 7, 1868
27	Benjamin Franklin Rice (R-AR)	June 23, 1868
28	Thomas Ward Osborn (R-FL)	June 25, 1868
29	William Pitt Kellogg (R-LA)	July 9, 1868			November 1, 1872
30	George Eliphaz Spencer (R-AL)	July 13, 1868
31	John Pool (R-NC)	July 14, 1860
32	Thomas James Robertson (R-SC)	July 15, 1860
33	Frederick Adolphus Sawyer (R-SC)	July 16, 1860
34	Hannibal Hamlin (R-ME)	March 4, 1869	Former Senator (12 years)
35	John Potter Stockton (D-NJ)		Former Senator (1 year)
36	Reuben Eaton Fenton (R-NY)		Former Representative (9 years)
37	William Thomas Hamilton (D-MD)		Former Representative (6 years)
38	Allen Granberry Thurman (D-OH)		Former Representative (2 years)
39	William Gannaway Brownlow (R-TN)		Former Governor	Tennessee 10th in Population (1860)
40	William Alfred Buckingham (R-CT)			Connecticut 24th in Population (1860)
41	Arthur Inghram Boreman (R-WV)			West Virginia 27th in Population (1860)
42	John Scott (R-PA)		Pennsylvania 2nd in Population (1860)
43	Daniel Darwin Pratt (R-IN)		Indiana 5th in Population (1860)
44	Carl Schurz (LR-MO)		Missouri 8th in Population (1860)
45	Matthew Hale Carpenter (R-WI)		Wisconsin 15th in Population (1860)
46	Eugene Casserly (D-CA)		California 26th in Population (1860)
47	Abijah Gilbert (R-FL)		Florida 32nd in Population (1860)
48	Thomas Francis Bayard, Sr. (D-DE)		Delaware 33rd in Population (1860)
49	Lot Myrick Morrill (R-DE)	October 30, 1869
50	John Warfield Johnston (D-VA)	January 26, 1870	Alphabetical (J)
51	John Francis Lewis (R-VA)	January 26, 1870	Alphabetical (L)
52	Adelbert Ames (R-MS)	February 23, 1870
53	James Winright Flanagan (R-TX)	March 30, 1870
54	Morgan Calvin Hamilton (R-TX)	March 31, 1870
55	Francis Preston Blair, Jr. (D-MO)	January 20, 1871
56	Joshua Hill (R-GA)	February 1, 1871
57	Frederick Theodore Frelinghuysen (R-NJ)	March 4, 1871	Former Senator (2 years)
58	William Windom (R-MN)		Former Senator (0 years)
59	John Alexander Logan (R-IL)		Former Representative (7 years)
60	Thomas White Ferry (R-MI)		Former Representative (6 years)
61	John White Stevenson (D-KY)		Former Representative (4 years)
62	Phineas Warren Hitchcock (R-NE)		Former Delegate (1 year)
63	Powell Clayton (R-AR)		Former Governor
64	Henry Cooper (D-TN)		Tennessee 10th in Population (1860)
65	George Goldthwaite (D-AL)		Alabama 13th in Population (1860)
66	Joseph Rodman West (R-LA)		Louisiana 17th in Population (1860)
67	George Grover Wright (R-IA)		Iowa 20th in Population (1860)
68	Henry Gassaway Davis (D-WV)		West Virginia 27th in Population (1860)
69	Eli Saulsbury (D-DE)		Delaware 33rd in Population (1860)
70	Alexander Caldwell (R-KS)		Kansas 34th in Population (1860)
71	James Kerr Kelly (D-OR)		Oregon 35th in Population (1860)
72	Thomas Manson Norwood (D-GA)	November 14, 1871
73	James Lusk Alcorn (R-MS)	December 1, 1871
74	Matt Whitaker Ransom (D-NC)	January 30, 1872
	Willis Benson Machen (D-KY)	September 27, 1872

43rd Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Charles Sumner (LR-MA)	April 24, 1851			March 11, 1874
2	Zachariah Chandler (R-MI)	March 4, 1857
3	Henry Bowen Anthony (R-RI)	March 4, 1859
4	Timothy Otis Howe (R-WI)	March 4, 1861
5	John Sherman (R-OH)	March 21, 1861
6	Alexander Ramsey (R-MN)	March 4, 1863	Former Representative
7	William Sprague (R-RI)	March 4, 1863
8	William Morris Stewart (R-NV))	February 1, 1865
9	Aaron Harrison Cragin (R-NH)	March 3, 1865
10	George Franklin Edmunds (R-VT)	April 3, 1866
11	Thomas Weston Tipton (R-NE)	March 1, 1867
12	Simon Cameron (R-PA)	March 4, 1867	Former Senator
13	Justin Smith Morrill (R-VT)		Former Representative (12 years)
14	Roscoe Conkling (R-NY)		Former Representative (6 years)
15	Orris Sanford Ferry (LR-CT)		Former Representative (2 years)
16	Oliver Hazard Perry Throck Morton (R-IN)
17	George Eliphaz Spencer (R-AL)	July 13, 1868
18	Thomas James Robertson (R-SC)	July 15, 1860
19	Hannibal Hamlin (R-ME)	March 4, 1869	Former Senator (12 years)
20	John Potter Stockton (D-NJ)		Former Senator (1 year)
21	Reuben Eaton Fenton (R-NY)		Former Representative (9 years)
22	William Thomas Hamilton (D-MD)		Former Representative (6 years)
23	Allen Granberry Thurman (D-OH)		Former Representative (2 years)
24	William Gannaway Brownlow (R-TN)		Former Governor	Tennessee 10th in Population (1860)
25	William Alfred Buckingham (R-CT)			Connecticut 24th in Population (1860)	February 5, 1875
26	Arthur Inghram Boreman (R-WV)			West Virginia 27th in Population (1860)
27	John Scott (R-PA)		Pennsylvania 2nd in Population (1860)
28	Daniel Darwin Pratt (R-IN)		Indiana 5th in Population (1860)
29	Carl Schurz (R-MO)		Missouri 8th in Population (1860)
30	Matthew Hale Carpenter (R-WI)		Wisconsin 15th in Population (1860)
31	Eugene Casserly (D-CA)		California 26th in Population (1860)		November 29, 1873
32	Abijah Gilbert (R-FL)		Florida 32nd in Population (1860)
33	Thomas Francis Bayard, Sr. (D-DE)		Delaware 33rd in Population (1860)
34	Lot Myrick Morrill (R-DE)	October 30, 1869
35	John Warfield Johnston (D-VA)	January 26, 1870	Alphabetical (J)
36	John Francis Lewis (R-VA)	January 26, 1870	Alphabetical (L)
37	Adelbert Ames (R-MS)	February 23, 1870			January 10, 1874
38	James Winright Flanagan (R-TX)	March 30, 1870
39	Morgan Calvin Hamilton (LR-TX)	March 31, 1870
40	Frederick Theodore Frelinghuysen (R-NJ)	March 4, 1871	Former Senator (2 years)
41	William Windom (R-MN)		Former Senator (0 years)
42	John Alexander Logan (R-IL)		Former Representative (7 years)
43	Thomas White Ferry (R-MI)		Former Representative (6 years)
44	John White Stevenson (D-KY)		Former Representative (4 years)
45	Phineas Warren Hitchcock (R-NE)		Former Delegate (1 year)
46	Powell Clayton (R-AR)		Former Governor
47	Henry Cooper (D-TN)		Tennessee 10th in Population (1860)
48	George Goldthwaite (D-AL)		Alabama 13th in Population (1860)
49	Joseph Rodman West (R-LA)		Louisiana 17th in Population (1860)
50	George Grover Wright (R-IA)		Iowa 20th in Population (1860)
51	Henry Gassaway Davis (D-WV)		West Virginia 27th in Population (1860)
52	Eli Saulsbury (D-DE)		Delaware 33rd in Population (1860)
53	Alexander Caldwell (R-KS)		Kansas 34th in Population (1860)		March 24, 1873
54	James Kerr Kelly (D-OR)		Oregon 35th in Population (1860)
55	Thomas Manson Norwood (D-GA)	November 14, 1871
56	James Lusk Alcorn (R-MS)	December 1, 1871
57	Matt Whitaker Ransom (D-NC)	January 30, 1872
58	Thomas Clay McCreery (D-KY)	March 4, 1873	Former Senator
59	William Boyd Allison (R-IA)		Former Representative (8 years)
60	Aaron Augustus Sargent (R-CA)		Former Representative (6 years)
61	Richard James Oglesby (R-IL)		Former Governor
62	Lewis Vital Bogy (D-MO)		Missouri 8th in Population (1870)
63	John Brown Gordon (D-GA)		Georgia 12th in Population (1870)
64	Augustus Summerfield Merrimon (D-NC)		North Carolina 14th in Population (1870)
65	George Robertson Dennis (D-MD)		Maryland 20th in Population (1870)
66	John James Patterson (R-SC)		South Carolina 22th in Population (1870)
67	Stephen Wallace Dorsey (R-AR)		Arkansas 26th in Population (1870)
68	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
69	Bainbridge Wadleigh (R-NH)		New Hampshire 31st in Population (1870)
70	Simon Barclay Conover (R-FL)		Florida 33rd in Population (1870)
71	John Hipple Mitchell (R-OR)		Oregon 36th in Population (1870)
72	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
73	George Sewel Boutwell (R-MA)	March 17, 1873
	Robert Crozier (R-KS)	November 24, 1873			February 12, 1874
	John Sharpenstein Hager (D-CA)	December 23, 1873
	James Madison Harvey (R-KS)	February 2, 1874
	Henry Roberts Pease (R-MS)	February 3, 1874
	William Barrett Washburn (R-MS)	February 3, 1874
	William Wallace Eaton (D-CT)	February 5, 1874
74	Open Seat (LA)	N/A

44th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Henry Bowen Anthony (R-RI)	March 4, 1859
2	Timothy Otis Howe (R-WI)	March 4, 1861
3	John Sherman (R-OH)	March 21, 1861
4	Aaron Harrison Cragin (R-NH)	March 3, 1865
5	George Franklin Edmunds (R-VT)	April 3, 1866
6	Simon Cameron (R-PA)	March 4, 1867	Former Senator
7	Justin Smith Morrill (R-VT)		Former Representative (12 years)
8	Roscoe Conkling (R-NY)		Former Representative (6 years)
9	Orris Sanford Ferry (LR-CT)		Former Representative (2 years)		November 21, 1875
10	Oliver Hazard Perry Throck Morton (R-IN)
11	George Eliphaz Spencer (R-AL)	July 13, 1868
12	Thomas James Robertson (R-SC)	July 15, 1860
13	Hannibal Hamlin (R-ME)	March 4, 1869	Former Senator
14	Allen Granberry Thurman (D-OH)		Former Representative
15	Thomas Francis Bayard, Sr. (D-DE)
16	Lot Myrick Morrill (R-DE)	October 30, 1869			July 7, 1876
17	John Warfield Johnston (D-VA)	January 26, 1870
18	Morgan Calvin Hamilton (R-TX)	March 31, 1870
19	Frederick Theodore Frelinghuysen (R-NJ)	March 4, 1871	Former Senator (2 years)
20	William Windom (R-MN)		Former Senator (0 years)
21	John Alexander Logan (R-IL)		Former Representative (7 years)
22	Thomas White Ferry (R-MI)		Former Representative (6 years)
23	John White Stevenson (D-KY)		Former Representative (4 years)
24	Phineas Warren Hitchcock (R-NE)		Former Delegate (1 year)
25	Powell Clayton (R-AR)		Former Governor
26	Henry Cooper (D-TN)		Tennessee 10th in Population (1860)
27	George Goldthwaite (D-AL)		Alabama 13th in Population (1860)
28	Joseph Rodman West (R-LA)		Louisiana 17th in Population (1860)
29	George Grover Wright (R-IA)		Iowa 20th in Population (1860)
30	Henry Gassaway Davis (D-WV)		West Virginia 27th in Population (1860)
31	Eli Saulsbury (D-DE)		Delaware 33rd in Population (1860)
32	James Kerr Kelly (D-OR)		Oregon 35th in Population (1860)
33	Thomas Manson Norwood (D-GA)	November 14, 1871
34	James Lusk Alcorn (R-MS)	December 1, 1871
35	Matt Whitaker Ransom (D-NC)	January 30, 1872
36	Thomas Clay McCreery (D-KY)	March 4, 1873	Former Senator
37	William Boyd Allison (R-IA)		Former Representative (8 years)
38	Aaron Augustus Sargent (R-CA)		Former Representative (6 years)
39	Richard James Oglesby (R-IL)		Former Governor
40	Lewis Vital Bogy (D-MO)		Missouri 8th in Population (1870)
41	John Brown Gordon (D-GA)		Georgia 12th in Population (1870)
42	Augustus Summerfield Merrimon (D-NC)		North Carolina 14th in Population (1870)
43	George Robertson Dennis (D-MD)		Maryland 20th in Population (1870)
44	John James Patterson (R-SC)		South Carolina 22th in Population (1870)
45	Stephen Wallace Dorsey (R-AR)		Arkansas 26th in Population (1870)
46	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
47	Bainbridge Wadleigh (R-NH)		New Hampshire 31st in Population (1870)
48	Simon Barclay Conover (R-FL)		Florida 33rd in Population (1870)
49	John Hipple Mitchell (R-OR)		Oregon 36th in Population (1870)
50	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
51	George Sewel Boutwell (R-MA)	March 17, 1873
52	James Madison Harvey (R-KS)	February 2, 1874
53	William Wallace Eaton (D-CT)	February 5, 1874
54	Andrew Johnson (D-TN)	March 4, 1875	Former Senator (4 years)		July 31, 1875
55	William Pinkney Whyte (D-MD)		Former Senator (0 years)
56	Henry Laurens Dawes (R-MA)		Former Representative (18 years)
57	Francis Kernan (D-NY)		Former Representative (2 years)	New York 1st in Population (1870)
58	Joseph Ewing McDonald (D-IN)		Former Representative (2 years)	Indiana 6th in Population (1870)
59	Theodore Fitz Randolph (D-NJ)		Former Governor	New Jersey 17th in Population (1870)
60	Newton Booth (R-CA)			California 24th in Population (1870)
61	Ambrose Everett Burnside (R-RI)			Rhode Island 32nd in Population (1870)
62	William Andrew Wallace (D-PA)		Pennsylvania 2nd in Population (1870)
63	Francis Marion Cockrell (D-MO)		Missouri 5th in Population (1870)
64	Robert Enoch Withers (D-VA)		Virginia 10th in Population (1870)
65	Isaac Peckham Christiancy (R-MI)		Michigan 13th in Population (1870)
66	Angus Cameron (R-WI)		Wisconsin 15th in Population (1870)
67	Blanche Kelso Bruce (R-MS)		Mississippi 18th in Population (1870)
68	Samuel Bell Maxey (D-TX)		Texas 19th in Population (1870)
69	Allen Taylor Caperton (D-WV)		West Virginia 27th in Population (1870)		July 26, 1876
70	Samuel James Renwick McMillan (R-MN)		Minnesota 28th in Population (1870)
71	Charles William Jones (R-FL)		Florida 33rd in Population (1870)
72	Algernon Sidney Paddock (R-NE)		Nebraska 35th in Population (1870)
73	William Sharon (R-NV)		Nevada 37th in Population (1870)
	David McKendree Key (D-TN)	August 18, 1875			January 19, 1877
	James Edward English (D-CT)	November 27, 1875			May 17, 1876
74	James Biddle Eustis (D-LA)	January 12, 1876
	William Henry Barnum (D-CT)	May 18, 1876
	James Gillespie Blaine (R-ME)	July 10, 1876
	Samuel Price (D-WV)	August 26, 1876			January 26, 1877
75	Jerome Bunty Chaffee (R-CO)	November 15, 1876	Former Delegate
76	Henry Moore Teller (R-CO)	November 15, 1876
	James Edmund Bailey (D-TN)	January 19, 1877
	Frank Hereford (D-WV)	January 31, 1877

45th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Henry Bowen Anthony (R-RI)	March 4, 1859
2	Timothy Otis Howe (R-WI)	March 4, 1861
3	John Sherman (R-OH)	March 21, 1861			March 8, 1877
4	George Franklin Edmunds (R-VT)	April 3, 1866
5	Simon Cameron (R-PA)	March 4, 1867	Former Senator		March 12, 1877
6	Justin Smith Morrill (R-VT)		Former Representative (12 years)
7	Roscoe Conkling (R-NY)		Former Representative (6 years)
8	Oliver Hazard Perry Throck Morton (R-IN)				November 1, 1877
9	George Eliphaz Spencer (R-AL)	July 13, 1868
10	Hannibal Hamlin (R-ME)	March 4, 1869	Former Senator
11	Allen Granberry Thurman (D-OH)		Former Representative
12	Thomas Francis Bayard, Sr. (D-DE)
13	John Warfield Johnston (D-VA)	January 26, 1870
14	William Windom (R-MN)	March 4, 1871	Former Senator
15	Thomas White Ferry (R-MI)		Former Representative
16	Henry Gassaway Davis (D-WV)		West Virginia 27th in Population (1860)
17	Eli Saulsbury (D-DE)		Delaware 33rd in Population (1860)
18	Matt Whitaker Ransom (D-NC)	January 30, 1872
19	Thomas Clay McCreery (D-KY)	March 4, 1873	Former Senator
20	William Boyd Allison (R-IA)		Former Representative (8 years)
21	Aaron Augustus Sargent (R-CA)		Former Representative (6 years)
22	Richard James Oglesby (R-IL)		Former Governor
23	Lewis Vital Bogy (D-MO)		Missouri 8th in Population (1870)		September 20, 1877
24	John Brown Gordon (D-GA)		Georgia 12th in Population (1870)
25	Augustus Summerfield Merrimon (D-NC)		North Carolina 14th in Population (1870)
26	George Robertson Dennis (D-MD)		Maryland 20th in Population (1870)
27	John James Patterson (R-SC)		South Carolina 22th in Population (1870)
28	Stephen Wallace Dorsey (R-AR)		Arkansas 26th in Population (1870)
29	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
30	Bainbridge Wadleigh (R-NH)		New Hampshire 31st in Population (1870)
31	Simon Barclay Conover (R-FL)		Florida 33rd in Population (1870)
32	John Hipple Mitchell (R-OR)		Oregon 36th in Population (1870)
33	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
34	William Wallace Eaton (D-CT)	February 5, 1874
35	William Pinkney Whyte (D-MD)	March 4, 1875	Former Senator
36	Henry Laurens Dawes (R-MA)		Former Representative (18 years)
37	Francis Kernan (D-NY)		Former Representative (2 years)	New York 1st in Population (1870)
38	Joseph Ewing McDonald (D-IN)		Former Representative (2 years)	Indiana 6th in Population (1870)
39	Theodore Fitz Randolph (D-NJ)		Former Governor	New Jersey 17th in Population (1870)
40	Newton Booth (R-CA)			California 24th in Population (1870)
41	Ambrose Everett Burnside (R-RI)			Rhode Island 32nd in Population (1870)
42	William Andrew Wallace (D-PA)		Pennsylvania 2nd in Population (1870)
43	Francis Marion Cockrell (D-MO)		Missouri 5th in Population (1870)
44	Robert Enoch Withers (D-VA)		Virginia 10th in Population (1870)
45	Isaac Peckham Christiancy (R-MI)		Michigan 13th in Population (1870)		February 10, 1879
46	Angus Cameron (R-WI)		Wisconsin 15th in Population (1870)
47	Blanche Kelso Bruce (R-MS)		Mississippi 18th in Population (1870)
48	Samuel Bell Maxey (D-TX)		Texas 19th in Population (1870)
49	Samuel James Renwick McMillan (R-MN)		Minnesota 28th in Population (1870)
50	Charles William Jones (D-FL)		Florida 33rd in Population (1870)
51	Algernon Sidney Paddock (R-NE)		Nebraska 35th in Population (1870)
52	William Sharon (R-NV)		Nevada 37th in Population (1870)
53	James Biddle Eustis (D-LA)	January 12, 1876
54	William Henry Barnum (D-CT)	May 18, 1876
55	James Gillespie Blaine (R-ME)	July 10, 1876
56	Jerome Bunty Chaffee (R-CO)	November 15, 1876	Former Delegate
57	Henry Moore Teller (R-CO)	November 15, 1876
58	James Edmund Bailey (D-TN)	January 19, 1877
59	Frank Hereford (D-WV)	January 31, 1877
60	William Pitt Kellogg (R-LA)	March 4, 1877	Former Senator (4 years)
61	Samuel Jordan Kirkwood (R-IA)		Former Senator (1 year)
62	George Frisbie Hoar (R-MA)		Former Representative (8 years)	Massachusetts 7th in Population (1870)
63	James Burnie Beck (D-KY)		Former Representative (8 years)	Kentucky 8th in Population (1870)
64	Lucius Quintus Cincinnatus Lamar (D-MS)		Former Representative (7 years)
65	Edward Henry Rollins (R-NH)		Former Representative (6 years)
66	Isham Green Harris (D-TN)		Former Representative (4 years)
67	Benjamin Harvey Hill (D-GA)		Former Representative (1 year)
68	La Fayette Grover (D-OR)		Former Representative (0 years)
69	Richard Coke (D-TX)		Former Governor	Texas 19th in Population (1870)
70	Augustus Hill Garland (D-AR)		Former Governor	Arkansas 26th in Population (1870)
71	David Davis (I-IL)		Illinois 4th in Population (1870)
72	John Tyler Morgan (D-AL)		Alabama 16th in Population (1870)
73	John Rhoderic McPherson (D-NJ)		New Jersey 17th in Population (1870)
74	Matthew Calbraith Butler (D-SC)		South Carolina 22nd in Population (1870)
75	Preston B. Plumb (R-KS)		Kansas 29th in Population (1870)
76	Alvin Saunders (R-NE)	March 5, 1877
	James Donald Cameron (R-PA)	March 20, 1877
	Stanley Matthews (R-OH)	March 21, 1877
	David Hartley Armstrong (D-MO)	September 29, 1877			January 26, 1879
	Daniel Wolsey Voorhees (D-IN)	November 6, 1877
	James Shields (D-MO)	January 22, 1879
	Zachariah Chandler (R-MI)	February 22, 1879

46th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Henry Bowen Anthony (R-RI)	March 4, 1859
2	George Franklin Edmunds (R-VT)	April 3, 1866
3	Justin Smith Morrill (R-VT)	March 4, 1867	Former Representative (12 years)
4	Roscoe Conkling (R-NY)	March 4, 1867	Former Representative (6 years)
5	Hannibal Hamlin (R-ME)	March 4, 1869	Former Senator
6	Allen Granberry Thurman (D-OH)		Former Representative
7	Thomas Francis Bayard, Sr. (D-DE)
8	John Warfield Johnston (D-VA)	January 26, 1870
9	William Windom (R-MN)	March 4, 1871	Former Senator
10	Thomas White Ferry (R-MI)		Former Representative
11	Henry Gassaway Davis (D-WV)		West Virginia 27th in Population (1860)
12	Eli Saulsbury (D-DE)		Delaware 33rd in Population (1860)
13	Matt Whitaker Ransom (D-NC)	January 30, 1872
14	William Boyd Allison (R-IA)	March 4, 1873	Former Representative
15	John Brown Gordon (D-GA)		Georgia 12th in Population (1870)		May 26, 1880
16	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
17	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
18	William Wallace Eaton (D-CT)	February 5, 1874
19	William Pinkney Whyte (D-MD)	March 4, 1875	Former Senator
20	Henry Laurens Dawes (R-MA)		Former Representative (18 years)
21	Francis Kernan (D-NY)		Former Representative (2 years)	New York 1st in Population (1870)
22	Joseph Ewing McDonald (D-IN)		Former Representative (2 years)	Indiana 6th in Population (1870)
23	Theodore Fitz Randolph (D-NJ)		Former Governor	New Jersey 17th in Population (1870)
24	Newton Booth (R-CA)			California 24th in Population (1870)
25	Ambrose Everett Burnside (R-RI)			Rhode Island 32nd in Population (1870)
26	William Andrew Wallace (D-PA)		Pennsylvania 2nd in Population (1870)
27	Francis Marion Cockrell (D-MO)		Missouri 5th in Population (1870)
28	Robert Enoch Withers (D-VA)		Virginia 10th in Population (1870)
29	Angus Cameron (R-WI)		Wisconsin 15th in Population (1870)
30	Blanche Kelso Bruce (R-MS)		Mississippi 18th in Population (1870)
31	Samuel Bell Maxey (D-TX)		Texas 19th in Population (1870)
32	Samuel James Renwick McMillan (R-MN)		Minnesota 28th in Population (1870)
33	Charles William Jones (D-FL)		Florida 33rd in Population (1870)
34	Algernon Sidney Paddock (R-NE)		Nebraska 35th in Population (1870)
35	William Sharon (R-NV)		Nevada 37th in Population (1870)
36	James Gillespie Blaine (R-ME)	July 10, 1876
37	Henry Moore Teller (R-CO)	November 15, 1876
38	James Edmund Bailey (D-TN)	January 19, 1877
39	Frank Hereford (D-WV)	January 31, 1877
40	William Pitt Kellogg (R-LA)	March 4, 1877	Former Senator (4 years)
41	Samuel Jordan Kirkwood (R-IA)		Former Senator (1 year)
42	George Frisbie Hoar (R-MA)		Former Representative (8 years)	Massachusetts 7th in Population (1870)
43	James Burnie Beck (D-KY)		Former Representative (8 years)	Kentucky 8th in Population (1870)
44	Lucius Quintus Cincinnatus Lamar (D-MS)		Former Representative (7 years)
45	Edward Henry Rollins (R-NH)		Former Representative (6 years)
46	Isham Green Harris (D-TN)		Former Representative (4 years)
47	Benjamin Harvey Hill (D-GA)		Former Representative (1 year)
48	La Fayette Grover (D-OR)		Former Representative (0 years)
49	Richard Coke (D-TX)		Former Governor	Texas 19th in Population (1870)
50	Augustus Hill Garland (D-AR)		Former Governor	Arkansas 26th in Population (1870)
51	David Davis (I-IL)		Illinois 4th in Population (1870)
52	John Tyler Morgan (D-AL)		Alabama 16th in Population (1870)
53	John Rhoderic McPherson (D-NJ)		New Jersey 17th in Population (1870)
54	Matthew Calbraith Butler (D-SC)		South Carolina 22nd in Population (1870)
55	Preston B. Plumb (R-KS)		Kansas 29th in Population (1870)
56	Alvin Saunders (R-NE)	March 5, 1877
57	James Donald Cameron (R-PA)	March 20, 1877
58	Daniel Wolsey Voorhees (D-IN)	November 6, 1877
59	Zachariah Chandler (R-MI)	February 22, 1879			November 1, 1879
60	John Alexander Logan (R-IL)	March 4, 1879	Former Senator (6 years)	Former Representative
61	Matthew Hale Carpenter (R-WI)		Former Senator (6 years)		February 24, 1881
62	George Smith Houston (D-AL)		Former Representative (17 years)		December 31, 1879
63	George Hunt Pendleton (D-OH)		Former Representative (8 years)
64	Zebulon Baird Vance (D-NC)		Former Representative (2 years, 2 months)
65	James Harvey Slater (D-OR)		Former Representative (2 years, 0 months)
66	James Black Groome (D-MD)		Former Governor	Maryland 20th in Population (1870)
67	Wade Hampton (D-SC)		Former Governor	South Carolina 22nd in Population (1870)
68	George Graham Vest (D-MO)		Missouri 5th in Population (1870)
69	John Stuart Williams (D-KY)		Kentucky 8th in Population (1870)
70	Benjamin Franklin Jonas (D-LA)		Louisiana 21st in Population (1870)
71	James Thompson Farley (D-CA)		California 24th in Population (1870)
72	Orville Hitchcock Platt (R-CT)		Connecticut 25th in Population (1870)
73	James David Walker (D-AR)		Arkansas 26th in Population (1870)
74	Wilkinson Call (D-FL)		Florida 33rd in Population (1870)
75	Nathaniel Peter Hill (R-CO)		Colorado 38th in Population (1870)
76	Charles Henry Bell (R-NH)	March 13, 1879			June 18, 1879
	Henry William Blair (R-NH)	June 20, 1879
	Henry Porter Baldwin (R-MI)	November 17, 1879
	Luke Pryor (D-AL)	January 7, 1880			November 23, 1880
	Joseph Emerson Brown (D-GA)	May 6, 1880
	James Lawrence Pugh (D-AL)	November 24, 1880

47th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Henry Bowen Anthony (R-RI)	March 4, 1859
2	George Franklin Edmunds (R-VT)	April 3, 1866
3	Justin Smith Morrill (R-VT)	March 4, 1867	Former Representative (12 years)
4	Roscoe Conkling (R-NY)	March 4, 1867	Former Representative (6 years)		May 16, 1881
5	Thomas Francis Bayard, Sr. (D-DE)	March 4, 1869
6	John Warfield Johnston (D-VA)	January 26, 1870
7	William Windom (R-MN)	March 4, 1871	Former Senator		March 7, 1881
8	Thomas White Ferry (R-MI)		Former Representative
9	Henry Gassaway Davis (D-WV)		West Virginia 27th in Population (1860)
10	Eli Saulsbury (D-DE)		Delaware 33rd in Population (1860)
11	Matt Whitaker Ransom (D-NC)	January 30, 1872
12	William Boyd Allison (R-IA)	March 4, 1873	Former Representative
13	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
14	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
15	Henry Laurens Dawes (R-MA)	March 4, 1875	Former Representative
16	Ambrose Everett Burnside (R-RI)		Former Governor		September 13, 1881
17	Francis Marion Cockrell (D-MO)		Missouri 5th in Population (1870)
18	Samuel Bell Maxey (D-TX)		Texas 19th in Population (1870)
19	Samuel James Renwick McMillan (R-MN)		Minnesota 28th in Population (1870)
20	Charles William Jones (D-FL)		Florida 33rd in Population (1870)
21	James Gillespie Blaine (R-ME)	July 10, 1876			March 5, 1881
22	Henry Moore Teller (R-CO)	November 15, 1876			April 17, 1882
23	William Pitt Kellogg (R-LA)	March 4, 1877	Former Senator (4 years)
24	Samuel Jordan Kirkwood (R-IA)		Former Senator (1 year)		March 7, 1881
25	George Frisbie Hoar (R-MA)		Former Representative (8 years)	Massachusetts 7th in Population (1870)
26	James Burnie Beck (D-KY)		Former Representative (8 years)	Kentucky 8th in Population (1870)
27	Lucius Quintus Cincinnatus Lamar (D-MS)		Former Representative (7 years)
28	Edward Henry Rollins (R-NH)		Former Representative (6 years)
29	Isham Green Harris (D-TN)		Former Representative (4 years)
30	Benjamin Harvey Hill (D-GA)		Former Representative (1 year)		August 16, 1882
31	La Fayette Grover (D-OR)		Former Representative (0 years)
32	Richard Coke (D-TX)		Former Governor	Texas 19th in Population (1870)
33	Augustus Hill Garland (D-AR)		Former Governor	Arkansas 26th in Population (1870)
34	David Davis (I-IL)		Illinois 4th in Population (1870)
35	John Tyler Morgan (D-AL)		Alabama 16th in Population (1870)
36	John Rhoderic McPherson (D-NJ)		New Jersey 17th in Population (1870)
37	Matthew Calbraith Butler (D-SC)		South Carolina 22nd in Population (1870)
38	Preston B. Plumb (R-KS)		Kansas 29th in Population (1870)
39	Alvin Saunders (R-NE)	March 5, 1877
40	James Donald Cameron (R-PA)	March 20, 1877
41	Daniel Wolsey Voorhees (D-IN)	November 6, 1877
42	John Alexander Logan (R-IL)	March 4, 1879	Former Senator
43	George Hunt Pendleton (D-OH)		Former Representative (8 years)
44	Zebulon Baird Vance (D-NC)		Former Representative (2 years, 2 months)
45	James Harvey Slater (D-OR)		Former Representative (2 years, 0 months)
46	James Black Groome (D-MD)		Former Governor	Maryland 20th in Population (1870)
47	Wade Hampton (D-SC)		Former Governor	South Carolina 22nd in Population (1870)
48	George Graham Vest (D-MO)		Missouri 5th in Population (1870)
49	John Stuart Williams (D-KY)		Kentucky 8th in Population (1870)
50	Benjamin Franklin Jonas (D-LA)		Louisiana 21st in Population (1870)
51	James Thompson Farley (D-CA)		California 24th in Population (1870)
52	Orville Hitchcock Platt (R-CT)		Connecticut 25th in Population (1870)
53	James David Walker (D-AR)		Arkansas 26th in Population (1870)
54	Wilkinson Call (D-FL)		Florida 33rd in Population (1870)
55	Nathaniel Peter Hill (R-CO)		Colorado 38th in Population (1870)
56	Henry William Blair (R-NH)	June 20, 1879
57	Joseph Emerson Brown (D-GA)	May 6, 1880
58	James Lawrence Pugh (D-AL)	November 24, 1880
59	John Sherman (R-OH)	March 4, 1881	Former Senator
60	Omar Dwight Conger (R-MI)		Former Representative (12 years)
61	Philetus Sawyer (R-WI)		Former Representative (10 years)	Wisconsin 15th in Population (1870)
62	Eugene Hale (R-ME)		Former Representative (10 years)	Maine 23rd in Population (1870)
63	Charles Henry Van Wyck (R-NE)		Former Representative (8 years)
64	Joseph Roswell Hawley (R-CT)		Former Representative (4 years, 3 months)
65	Thomas Collier Platt (R-NY)		Former Representative (4 years, 0 months)	New York 1st in Population (1870)	May 16, 1881
66	John Inscho Mitchell (R-PA)		Former Representative (4 years, 0 months)	Pennsylvania 2nd in Population (1870)
67	Benjamin Harrison (R-IN)		Indiana 6th in Population (1870)
68	Howell Edmunds Jackson (D-TN)		Tennessee 9th in Population (1870)
69	William Mahone (RD-VA)		Virginia 10th in Population (1870)
70	William Joyce Sewell (R-NJ)		New Jersey 17th in Population (1870)
71	James Zachariah George (D-MS)		Mississippi 18th in Population (1870)
72	Arthur Pue Gorman (D-MD)		Maryland 20th in Population (1870)
73	John Franklin Miller (R-CA)		California 24th in Population (1870)
74	Johnson Newlon Camden (D-WV)		California 24th in Population (1870)
75	James Graham Fair (D-NV)		Nevada 37th in Population (1870)
	James Wilson McDill (R-IA)	March 8, 1881
	Alonzo Jay Edgerton (R-MN)	March 12, 1881			October 30, 1881
76	Angus Cameron (R-WI)	March 14, 1881
	William Pierce Frye (R-ME)	March 18, 1881
	Warner Miller (R-NY)	July 27, 1881
	Elbridge Gerry Lapham (R-NY)	August 2, 1881
	Nelson Wilmarth Aldrich (R-RI)	October 5, 1881
	William Windom (R-MN)	November 15, 1881
	George Miles Chilcott (R-CO)	April 17, 1882			January 27, 1883
	Middleton Pope Barrow (D-GA)	November 15, 1882
	Horace Austin Warner Tabor (R-CO)	January 27, 1883

48th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	Henry Bowen Anthony (R-RI)	March 4, 1859			September 2, 1884
2	George Franklin Edmunds (R-VT)	April 3, 1866
3	Justin Smith Morrill (R-VT)	March 4, 1867
4	Thomas Francis Bayard, Sr. (D-DE)	March 4, 1869
5	Eli Saulsbury (D-DE)	March 4, 1871
6	Matt Whitaker Ransom (D-NC)	January 30, 1872
7	William Boyd Allison (R-IA)	March 4, 1873	Former Representative
8	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
9	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
10	Henry Laurens Dawes (R-MA)	March 4, 1875	Former Representative
11	Francis Marion Cockrell (D-MO)		Missouri 5th in Population (1870)
12	Samuel Bell Maxey (D-TX)		Texas 19th in Population (1870)
13	Samuel James Renwick McMillan (R-MN)		Minnesota 28th in Population (1870)
14	Charles William Jones (D-FL)		Florida 33rd in Population (1870)
15	George Frisbie Hoar (R-MA)	March 4, 1877	Former Representative (8 years)	Massachusetts 7th in Population (1870)
16	James Burnie Beck (D-KY)		Former Representative (8 years)	Kentucky 8th in Population (1870)
17	Lucius Quintus Cincinnatus Lamar (D-MS)		Former Representative (7 years)
18	Isham Green Harris (D-TN)		Former Representative (4 years)
19	Richard Coke (D-TX)		Former Governor	Texas 19th in Population (1870)
20	Augustus Hill Garland (D-AR)		Former Governor	Arkansas 26th in Population (1870)
21	John Tyler Morgan (D-AL)		Alabama 16th in Population (1870)
22	John Rhoderic McPherson (D-NJ)		New Jersey 17th in Population (1870)
23	Matthew Calbraith Butler (D-SC)		South Carolina 22nd in Population (1870)
24	Preston B. Plumb (R-KS)		Kansas 29th in Population (1870)
25	James Donald Cameron (R-PA)	March 20, 1877
26	Daniel Wolsey Voorhees (D-IN)	November 6, 1877
27	John Alexander Logan (R-IL)	March 4, 1879	Former Senator
28	George Hunt Pendleton (D-OH)		Former Representative (8 years)
29	Zebulon Baird Vance (D-NC)		Former Representative (2 years, 2 months)
30	James Harvey Slater (D-OR)		Former Representative (2 years, 0 months)
31	James Black Groome (D-MD)		Former Governor	Maryland 20th in Population (1870)
32	Wade Hampton (D-SC)		Former Governor	South Carolina 22nd in Population (1870)
33	George Graham Vest (D-MO)		Missouri 5th in Population (1870)
34	John Stuart Williams (D-KY)		Kentucky 8th in Population (1870)
35	Benjamin Franklin Jonas (D-LA)		Louisiana 21st in Population (1870)
36	James Thompson Farley (D-CA)		California 24th in Population (1870)
37	Orville Hitchcock Platt (R-CT)		Connecticut 25th in Population (1870)
38	James David Walker (D-AR)		Arkansas 26th in Population (1870)
39	Wilkinson Call (D-FL)		Florida 33rd in Population (1870)
40	Nathaniel Peter Hill (R-CO)		Colorado 38th in Population (1870)
41	Henry William Blair (R-NH)	June 20, 1879
42	Joseph Emerson Brown (D-GA)	May 6, 1880
43	James Lawrence Pugh (D-AL)	November 24, 1880
44	John Sherman (R-OH)	March 4, 1881	Former Senator
45	Omar Dwight Conger (R-MI)		Former Representative (12 years)
46	Philetus Sawyer (R-WI)		Former Representative (10 years)	Wisconsin 15th in Population (1870)
47	Eugene Hale (R-ME)		Former Representative (10 years)	Maine 23rd in Population (1870)
48	Charles Henry Van Wyck (R-NE)		Former Representative (8 years)
49	Joseph Roswell Hawley (R-CT)		Former Representative (4 years, 3 months)
50	John Inscho Mitchell (R-PA)		Former Representative (4 years, 0 months)
51	Benjamin Harrison (R-IN)		Indiana 6th in Population (1870)
52	Howell Edmunds Jackson (D-TN)		Tennessee 9th in Population (1870)
53	William Mahone (RD-VA)		Virginia 10th in Population (1870)
54	William Joyce Sewell (R-NJ)		New Jersey 17th in Population (1870)
55	James Zachariah George (D-MS)		Mississippi 18th in Population (1870)
56	Arthur Pue Gorman (D-MD)		Maryland 20th in Population (1870)
57	John Franklin Miller (R-CA)		California 24th in Population (1870)
58	Johnson Newlon Camden (D-WV)		California 24th in Population (1870)
59	James Graham Fair (D-NV)		Nevada 37th in Population (1870)
60	Angus Cameron (R-WI)	March 14, 1881
61	William Pierce Frye (R-ME)	March 18, 1881
62	Warner Miller (R-NY)	July 27, 1881
63	Elbridge Gerry Lapham (R-NY)	August 2, 1881
64	Nelson Wilmarth Aldrich (R-RI)	October 5, 1881
65	Randall Lee Gibson (D-LA)	March 4, 1883	Former Representative (8 years)
66	James Falconer Wilson (R-IA)		Former Representative (7 years)
67	Shelby Moore Cullom (R-IL)		Former Representative (6 years)	Former Governor
68	John Edward Kenna (D-WV)		Former Representative (6 years)
69	Alfred Holt Colquitt (D-GA)		Former Representative (2 years)	Former Governor
70	Austin Franklin Pike (R-NH)		Former Representative (2 years)
71	Thomas Witherell Palmer (R-MI)		Michigan 9th in Population (1880)
72	Harrison Holt Riddleberger (RD-VA)		Virginia 14th in Population (1880)
73	Dwight May Sabin (R-MN)		Minnesota 26th in Population (1880)
74	Charles Frederick Manderson (R-NE)		Nebraska 30th in Population (1880)
75	Thomas Mead Bowen (R-CO)		Colorado 35th in Population (1880)
76	Joseph Norton Dolph (R-OR)		Oregon 36th in Population (1880)
	William Paine Sheffield (R-RI)	November 19, 1884			January 20, 1885
	Jonathan Chace (R-RI)	January 20, 1885

49th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	George Franklin Edmunds (R-VT)	April 3, 1866
2	Justin Smith Morrill (R-VT)	March 4, 1867
3	Thomas Francis Bayard, Sr. (D-DE)	March 4, 1869			March 6, 1885
4	Eli Saulsbury (D-DE)	March 4, 1871
5	Matt Whitaker Ransom (D-NC)	January 30, 1872
6	William Boyd Allison (R-IA)	March 4, 1873	Former Representative
7	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
8	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
9	Henry Laurens Dawes (R-MA)	March 4, 1875	Former Representative
10	Francis Marion Cockrell (D-MO)		Missouri 5th in Population (1870)
11	Samuel Bell Maxey (D-TX)		Texas 19th in Population (1870)
12	Samuel James Renwick McMillan (R-MN)		Minnesota 28th in Population (1870)
13	Charles William Jones (D-FL)		Florida 33rd in Population (1870)
14	George Frisbie Hoar (R-MA)	March 4, 1877	Former Representative (8 years)	Massachusetts 7th in Population (1870)
15	James Burnie Beck (D-KY)		Former Representative (8 years)	Kentucky 8th in Population (1870)
16	Lucius Quintus Cincinnatus Lamar (D-MS)		Former Representative (7 years)		March 6, 1885
17	Isham Green Harris (D-TN)		Former Representative (4 years)
18	Richard Coke (D-TX)		Former Governor	Texas 19th in Population (1870)
19	Augustus Hill Garland (D-AR)		Former Governor	Arkansas 26th in Population (1870)	March 6, 1885
20	John Tyler Morgan (D-AL)		Alabama 16th in Population (1870)
21	John Rhoderic McPherson (D-NJ)		New Jersey 17th in Population (1870)
22	Matthew Calbraith Butler (D-SC)		South Carolina 22nd in Population (1870)
23	Preston B. Plumb (R-KS)		Kansas 29th in Population (1870)
24	James Donald Cameron (R-PA)	March 20, 1877
25	Daniel Wolsey Voorhees (D-IN)	November 6, 1877
26	John Alexander Logan (R-IL)	March 4, 1879	Former Senator		December 26, 1886
27	Zebulon Baird Vance (D-NC)		Former Representative
28	Wade Hampton (D-SC)		Former Governor
29	George Graham Vest (D-MO)		Missouri 5th in Population (1870)
30	Orville Hitchcock Platt (R-CT)		Connecticut 25th in Population (1870)
31	Wilkinson Call (D-FL)		Florida 33rd in Population (1870)
32	Henry William Blair (R-NH)	June 20, 1879
33	Joseph Emerson Brown (D-GA)	May 6, 1880
34	James Lawrence Pugh (D-AL)	November 24, 1880
35	John Sherman (R-OH)	March 4, 1881	Former Senator
36	Omar Dwight Conger (R-MI)		Former Representative (12 years)
37	Philetus Sawyer (R-WI)		Former Representative (10 years)	Wisconsin 15th in Population (1870)
38	Eugene Hale (R-ME)		Former Representative (10 years)	Maine 23rd in Population (1870)
39	Charles Henry Van Wyck (R-NE)		Former Representative (8 years)
40	Joseph Roswell Hawley (R-CT)		Former Representative (4 years, 3 months)
41	John Inscho Mitchell (R-PA)		Former Representative (4 years, 0 months)
42	Benjamin Harrison (R-IN)		Indiana 6th in Population (1870)
43	Howell Edmunds Jackson (D-TN)		Tennessee 9th in Population (1870)		April 14, 1886
44	William Mahone (RD-VA)		Virginia 10th in Population (1870)
45	William Joyce Sewell (R-NJ)		New Jersey 17th in Population (1870)
46	James Zachariah George (D-MS)		Mississippi 18th in Population (1870)
47	Arthur Pue Gorman (D-MD)		Maryland 20th in Population (1870)
48	John Franklin Miller (R-CA)		California 24th in Population (1870)		March 8, 1886
49	Johnson Newlon Camden (D-WV)		California 24th in Population (1870)
50	James Graham Fair (D-NV)		Nevada 37th in Population (1870)
51	William Pierce Frye (R-ME)	March 18, 1881
52	Warner Miller (R-NY)	July 27, 1881
53	Nelson Wilmarth Aldrich (R-RI)	October 5, 1881
54	Randall Lee Gibson (D-LA)	March 4, 1883	Former Representative (8 years)
55	James Falconer Wilson (R-IA)		Former Representative (7 years)
56	Shelby Moore Cullom (R-IL)		Former Representative (6 years)	Former Governor
57	John Edward Kenna (D-WV)		Former Representative (6 years)
58	Alfred Holt Colquitt (D-GA)		Former Representative (2 years)	Former Governor
59	Austin Franklin Pike (R-NH)		Former Representative (2 years)		October 8, 1886
60	Thomas Witherell Palmer (R-MI)		Michigan 9th in Population (1880)
61	Harrison Holt Riddleberger (RD-VA)		Virginia 14th in Population (1880)
62	Dwight May Sabin (R-MN)		Minnesota 26th in Population (1880)
63	Charles Frederick Manderson (R-NE)		Nebraska 30th in Population (1880)
64	Thomas Mead Bowen (R-CO)		Colorado 35th in Population (1880)
65	Joseph Norton Dolph (R-OR)		Oregon 36th in Population (1880)
66	Jonathan Chace (R-RI)	January 20, 1885
67	Henry Moore Teller (R-CO)	March 4, 1885	Former Senator (5 years)
68	James Biddle Eustis (D-LA)		Former Senator (3 years)
69	Joseph Clay Stiles Blackburn (D-KY)		Former Representative (10 years)
70	James Kimbrough Jones (D-AR)		Former Representative (4 years)
71	Henry B. Payne (D-OH)		Former Representative (2 years)	Ohio 3rd in Population (1880)
72	Ephraim King Wilson (R-MD)		Former Representative (2 years)	Maryland 23rd in Population (1880)
73	William Maxwell Evarts (R-NY)		Former Cabinet Member
74	John Coit Spooner (R-WI)		Wisconsin 16th in Population (1880)
75	Leland Stanford (R-CA)		California 24th in Population (1880)
	Edward Cary Walthall (D-MS)	March 9, 1885
	George Gray (D-DE)	March 18, 1885
	James Henderson Berry (D-AR)	March 20, 1885
76	John Hipple Mitchell (R-OR)	December 17, 1885
	George Hearst (D-CA)	March 23, 1886			August 4, 1886
	Washington Curran Whitthorne (D-TN)	April 16, 1886
	Abram Pease Williams (R-CA)	August 4, 1886
	Person Colby Cheney (R-NH)	November 24, 1886
	Charles Benjamin Farwell (R-IL)	January 19, 1887

50th Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	George Franklin Edmunds (R-VT)	April 3, 1866
2	Justin Smith Morrill (R-VT)	March 4, 1867
3	Eli Saulsbury (D-DE)	March 4, 1871
4	Matt Whitaker Ransom (D-NC)	January 30, 1872
5	William Boyd Allison (R-IA)	March 4, 1873	Former Representative
6	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
7	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
8	Henry Laurens Dawes (R-MA)	March 4, 1875	Former Representative
9	Francis Marion Cockrell (D-MO)	March 4, 1875
10	George Frisbie Hoar (R-MA)	March 4, 1877	Former Representative (8 years)	Massachusetts 7th in Population (1870)
11	James Burnie Beck (D-KY)		Former Representative (8 years)	Kentucky 8th in Population (1870)
12	Isham Green Harris (D-TN)		Former Representative (4 years)
13	Richard Coke (D-TX)		Former Governor
14	John Tyler Morgan (D-AL)		Alabama 16th in Population (1870)
15	John Rhoderic McPherson (D-NJ)		New Jersey 17th in Population (1870)
16	Matthew Calbraith Butler (D-SC)		South Carolina 22nd in Population (1870)
17	Preston B. Plumb (R-KS)		Kansas 29th in Population (1870)
18	James Donald Cameron (R-PA)	March 20, 1877
19	Daniel Wolsey Voorhees (D-IN)	November 6, 1877
20	Zebulon Baird Vance (D-NC)	March 4, 1879	Former Representative
21	Wade Hampton (D-SC)		Former Governor
22	George Graham Vest (D-MO)		Missouri 5th in Population (1870)
23	Orville Hitchcock Platt (R-CT)		Connecticut 25th in Population (1870)
24	Wilkinson Call (D-FL)		Florida 33rd in Population (1870)
25	Henry William Blair (R-NH)	June 20, 1879
26	Joseph Emerson Brown (D-GA)	May 6, 1880
27	James Lawrence Pugh (D-AL)	November 24, 1880
28	John Sherman (R-OH)	March 4, 1881	Former Senator
29	Philetus Sawyer (R-WI)		Former Representative (10 years)	Wisconsin 15th in Population (1870)
30	Eugene Hale (R-ME)		Former Representative (10 years)	Maine 23rd in Population (1870)
31	Joseph Roswell Hawley (R-CT)		Former Representative (4 years, 3 months)
32	James Zachariah George (D-MS)		Mississippi 18th in Population (1870)
33	Arthur Pue Gorman (D-MD)		Maryland 20th in Population (1870)
34	William Pierce Frye (R-ME)	March 18, 1881
35	Nelson Wilmarth Aldrich (R-RI)	October 5, 1881
36	Randall Lee Gibson (D-LA)	March 4, 1883	Former Representative (8 years)
37	James Falconer Wilson (R-IA)		Former Representative (7 years)
38	Shelby Moore Cullom (R-IL)		Former Representative (6 years)	Former Governor
39	John Edward Kenna (D-WV)		Former Representative (6 years)
40	Alfred Holt Colquitt (D-GA)		Former Representative (2 years)
41	Thomas Witherell Palmer (R-MI)		Michigan 9th in Population (1880)
42	Harrison Holt Riddleberger (RD-VA)		Virginia 14th in Population (1880)
43	Dwight May Sabin (R-MN)		Minnesota 26th in Population (1880)
44	Charles Frederick Manderson (R-NE)		Nebraska 30th in Population (1880)
45	Thomas Mead Bowen (R-CO)		Colorado 35th in Population (1880)
46	Joseph Norton Dolph (R-OR)		Oregon 36th in Population (1880)
47	Jonathan Chace (R-RI)	January 20, 1885
48	Henry Moore Teller (R-CO)	March 4, 1885	Former Senator (5 years)
49	James Biddle Eustis (D-LA)		Former Senator (3 years)
50	Joseph Clay Stiles Blackburn (D-KY)		Former Representative (10 years)
51	James Kimbrough Jones (D-AR)		Former Representative (4 years)
52	Henry B. Payne (D-OH)		Former Representative (2 years)	Ohio 3rd in Population (1880)
53	Ephraim King Wilson (R-MD)		Former Representative (2 years)	Maryland 23rd in Population (1880)
54	William Maxwell Evarts (R-NY)		Former Cabinet Member
55	John Coit Spooner (R-WI)		Wisconsin 16th in Population (1880)
56	Leland Stanford (R-CA)		California 24th in Population (1880)
57	Edward Cary Walthall (D-MS)	March 9, 1885
58	George Gray (D-DE)	March 18, 1885
59	James Henderson Berry (D-AR)	March 20, 1885
60	John Hipple Mitchell (R-OR)	December 17, 1885
61	Person Colby Cheney (R-NH)	November 24, 1886			June 14, 1887
62	Charles Benjamin Farwell (R-IL)	January 19, 1887
63	Henry Moore Teller (R-CO)	March 3, 1887	Former Senator (10 years)
64	Algernon Sidney Paddock (R-NE)		Former Senator (6 years)
65	George Hearst (D-CA)		Former Senator (4 months)
66	David Turpie (D-IN)		Former Senator (1 month)
67	John Henninger Reagan (D-TX)		Former Representative (16 years)
68	Frank Hiscock (R-NY)		Former Representative (10 years)
69	John Warwick Daniel (D-VA)		Former Representative (2 years)
70	William Brimage Bate (D-TN)		Former Governor	Tennessee 12th in Population (1880)
71	Cushman Kellogg Davis (R-MN)		Former Governor	Minnesota 26th in Population (1880)
72	Matthew Stanley Quay (R-PA)		Pennsylvania 2nd in Population (1880)
73	Francis Brown Stockbridge (R-MI)		Michigan 9th in Population (1880)
74	Rufus Blodgett (D-NJ)		New Jersey 19th in Population (1880)
75	Charles James Faulkner (D-WV)		West Virginia 29th in Population (1880)
76	Samuel Pasco (D-FL)	May 19, 1887
	William Eaton Chandler (R-NH)	June 14, 1887

51st Congress

#	Name	Seniority Date	2nd Determining Factor	3rd Determining Factor	Departure Date
1	George Franklin Edmunds (R-VT)	April 3, 1866
2	Justin Smith Morrill (R-VT)	March 4, 1867
3	Eli Saulsbury (D-DE)	March 4, 1871
4	Matt Whitaker Ransom (D-NC)	January 30, 1872
5	William Boyd Allison (R-IA)	March 4, 1873	Former Representative
6	John James Ingalls (R-KS)		Kansas 29th in Population (1870)
7	John Percival Jones (R-NV)		Nevada 37th in Population (1870)
8	Henry Laurens Dawes (R-MA)	March 4, 1875	Former Representative
9	Francis Marion Cockrell (D-MO)	March 4, 1875
10	George Frisbie Hoar (R-MA)	March 4, 1877	Former Representative (8 years)	Massachusetts 7th in Population (1870)
11	James Burnie Beck (D-KY)		Former Representative (8 years)	Kentucky 8th in Population (1870)
12	Isham Green Harris (D-TN)		Former Representative (4 years)
13	Richard Coke (D-TX)		Former Governor
14	John Tyler Morgan (D-AL)		Alabama 16th in Population (1870)
15	John Rhoderic McPherson (D-NJ)		New Jersey 17th in Population (1870)
16	Matthew Calbraith Butler (D-SC)		South Carolina 22nd in Population (1870)
17	Preston B. Plumb (R-KS)		Kansas 29th in Population (1870)
18	James Donald Cameron (R-PA)	March 20, 1877
19	Daniel Wolsey Voorhees (D-IN)	November 6, 1877
20	Zebulon Baird Vance (D-NC)	March 4, 1879	Former Representative
21	Wade Hampton (D-SC)		Former Governor
22	George Graham Vest (D-MO)		Missouri 5th in Population (1870)
23	Orville Hitchcock Platt (R-CT)		Connecticut 25th in Population (1870)
24	Wilkinson Call (D-FL)		Florida 33rd in Population (1870)
25	Henry William Blair (R-NH)	June 20, 1879
26	Joseph Emerson Brown (D-GA)	May 6, 1880
27	James Lawrence Pugh (D-AL)	November 24, 1880
28	John Sherman (R-OH)	March 4, 1881	Former Senator
29	Philetus Sawyer (R-WI)		Former Representative (10 years)	Wisconsin 15th in Population (1870)
30	Eugene Hale (R-ME)		Former Representative (10 years)	Maine 23rd in Population (1870)
31	Joseph Roswell Hawley (R-CT)		Former Representative (4 years, 3 months)
32	James Zachariah George (D-MS)		Mississippi 18th in Population (1870)
33	Arthur Pue Gorman (D-MD)		Maryland 20th in Population (1870)
34	William Pierce Frye (R-ME)	March 18, 1881
35	Nelson Wilmarth Aldrich (R-RI)	October 5, 1881
36	Randall Lee Gibson (D-LA)	March 4, 1883	Former Representative (8 years)
37	James Falconer Wilson (R-IA)		Former Representative (7 years)
38	Shelby Moore Cullom (R-IL)		Former Representative (6 years)	Former Governor
39	John Edward Kenna (D-WV)		Former Representative (6 years)
40	Alfred Holt Colquitt (D-GA)		Former Representative (2 years)
41	Thomas Witherell Palmer (R-MI)		Michigan 9th in Population (1880)
42	Harrison Holt Riddleberger (RD-VA)		Virginia 14th in Population (1880)
43	Dwight May Sabin (R-MN)		Minnesota 26th in Population (1880)
44	Charles Frederick Manderson (R-NE)		Nebraska 30th in Population (1880)
45	Thomas Mead Bowen (R-CO)		Colorado 35th in Population (1880)
46	Joseph Norton Dolph (R-OR)		Oregon 36th in Population (1880)
47	Jonathan Chace (R-RI)	January 20, 1885
48	Henry Moore Teller (R-CO)	March 4, 1885	Former Senator (5 years)
49	James Biddle Eustis (D-LA)		Former Senator (3 years)
50	Joseph Clay Stiles Blackburn (D-KY)		Former Representative (10 years)
51	James Kimbrough Jones (D-AR)		Former Representative (4 years)
52	Henry B. Payne (D-OH)		Former Representative (2 years)	Ohio 3rd in Population (1880)
53	Ephraim King Wilson (R-MD)		Former Representative (2 years)	Maryland 23rd in Population (1880)
54	William Maxwell Evarts (R-NY)		Former Cabinet Member
55	John Coit Spooner (R-WI)		Wisconsin 16th in Population (1880)
56	Leland Stanford (R-CA)		California 24th in Population (1880)
57	Edward Cary Walthall (D-MS)	March 9, 1885
58	George Gray (D-DE)	March 18, 1885
59	James Henderson Berry (D-AR)	March 20, 1885
60	John Hipple Mitchell (R-OR)	December 17, 1885
61	Person Colby Cheney (R-NH)	November 24, 1886			June 14, 1887
62	Charles Benjamin Farwell (R-IL)	January 19, 1887
63	Henry Moore Teller (R-CO)	March 3, 1887	Former Senator (10 years)
64	Algernon Sidney Paddock (R-NE)		Former Senator (6 years)
65	George Hearst (D-CA)		Former Senator (4 months)
66	David Turpie (D-IN)		Former Senator (1 month)
67	John Henninger Reagan (D-TX)		Former Representative (16 years)
68	Frank Hiscock (R-NY)		Former Representative (10 years)
69	John Warwick Daniel (D-VA)		Former Representative (2 years)
70	William Brimage Bate (D-TN)		Former Governor	Tennessee 12th in Population (1880)
71	Cushman Kellogg Davis (R-MN)		Former Governor	Minnesota 26th in Population (1880)
72	Matthew Stanley Quay (R-PA)		Pennsylvania 2nd in Population (1880)
73	Francis Brown Stockbridge (R-MI)		Michigan 9th in Population (1880)
74	Rufus Blodgett (D-NJ)		New Jersey 19th in Population (1880)
75	Charles James Faulkner (D-WV)		West Virginia 29th in Population (1880)
76	Samuel Pasco (D-FL)	May 19, 1887
	William Eaton Chandler (R-NH)	June 14, 1887