List of United States Senate election results by state

The following table shows regularly-scheduled United States Senate elections by state by year. The table does not include appointments or special elections, though it does include elections that occurred upon a state delegation's admission or readmission to the Senate. The table also includes elections that filled vacancies to unexpired terms that had never been filled due to legislative deadlock or an elected candidate's failure to qualify. The table does not denote post-election party switching. Note that, particularly prior to the ratification of the 17th Amendment in 1913, many regular elections took place in odd years rather than in the preceding even years.

Legend

Label	Party	Label	Party	Label	Party	Label	Party	Label	Party
PA	Pro-Administration Faction	AJ	Anti-Jacksonian	FS	Free Soil Party	SR	Silver Republican Party	—	No regularly-scheduled election
AA	Anti-Administration Faction	D	Democratic Party	A	American Party	FL	Farmer-Labor Party	I	Independent
F	Federalist Party	R	Republican Party	Po	Populist Party			Sp	Split result^[1]
DR	Democratic-Republican Party	Nu	Nullifier Party	U	Unionists^[2]
J	Jacksonians	W	Whig Party	Ra	Readjuster Party

Table

Year → Class → Congress →	1789 1 1st	1789 2 1st	1789 3 1st	1790 1 2nd	1792 2 3rd	1794 3 4th	1796 1 5th	1798 2 6th	1800 3 7th	1802 1 8th	1804 2 9th	1806 3 10th	1808 1 11th	1810 2 12th	1812 3 13th	1814 1 14th	1816 2 15th	1818 3 16th	1820 1 17th	1822 2 18th	1824 3 19th	1826 1 20th	Year → Class → Congress →	1828 2 21st	1830 3 22nd	1832 1 23rd	1834 2 24th	1836 3 25th	1838 1 26th	1840 2 27th	1842 3 28th	1844 1 29th	1846 2 30th	1848 3 31st	1850 1 32nd	1852 2 33rd	1854 3 34th	Year → Class → Congress →	1856 1 35th	1858 2 36th	1860 3 37th	1862 1 38th	1864 2 39th	1866 3 40th	1868 1 41st	1870 2 42nd	1872 3 43rd	1874 1 44th	1876 2 45th	1878 3 46th	1880 1 47th	1882 2 48th	1884 3 49th	1886 1 50th	1888 2 51st	1890 3 52nd	1892 1 53rd	1894 2 54th	Year → Class → Congress →	1896 3 55th	1898 1 56th	1900 2 57th	1902 3 58th	1904 1 59th	1906 2 60th	1908 3 61st	1910 1 62nd	1912 2 63rd	1914 3 64th	1916 1 65th	1918 2 66th	1920 3 67th	1922 1 68th	1924 2 69th	1926 3 70th	1928 1 71st	1930 2 72nd	Year → Class → Congress →	1932 3 73rd	1934 1 74th	1936 2 75th	1938 3 76th	1940 1 77th	1942 2 78th	1944 3 79th	1946 1 80th	1948 2 81st	1950 3 82nd	1952 1 83rd	1954 2 84th	1956 3 85th	1958 1 86th	1960 2 87th	1962 3 88th	1964 1 89th	1966 2 90th	Year → Class → Congress →	1968 3 91st	1970 1 92nd	1972 2 93rd	1974 3 94th	1976 1 95th	1978 2 96th	1980 3 97th	1982 1 98th	1984 2 99th	1986 3 100th	1988 1 101st	1990 2 102nd	1992 3 103rd	1994 1 104th	1996 2 105th	1998 3 106th	2000 1 107th	2002 2 108th	2004 3 109th	2006 1 110th	2008 2 111th	2010 3 112th	2012 1 113th	2014 2 114th	2016 3 115th	2018 1 116th	2020 2 117th	2022 3 118th
						First Party System																		Second Party System															Third Party System																					Fourth Party System																			Fifth Party System																			Sixth Party System^[3]
Alabama																		2DR	—	DR	J	—	Alabama	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Alabama	—	D	—	—	—	—	2R	D	R	—	D	D	—	D	D	—	D	D	—	D	Alabama	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Alabama	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Alabama	D	—	D	D	—	D	R	—	D	D	—	D	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R
Alaska																							Alaska															Alaska																					Alaska																			Alaska														2D	D	D	—	D	Alaska	D	—	R	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	D	R	—	R	R	—	R	R
Arizona																							Arizona															Arizona																					Arizona									2D	D	D	—	R	D	—	D	D	—	Arizona	D	D	—	D	D	—	D	D	—	D	R	—	D	R	—	D	R	—	Arizona	R	R	—	R	D	—	R	D	—	R	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	D	—	D
Arkansas																							Arkansas					2D	—	D	D	—	D	D	—	D	D	Arkansas	—	D	D	—	—	—	2R	R	R	—	D	D	—	D	D	—	D	D	—	D	Arkansas	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Arkansas	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Arkansas	D	—	D	D	—	D	D	—	D	D	—	D	D	—	R	D	—	D	D	—	D	R	—	R	R	—	R	R
California																							California												2D	—	D	California	D	—	D	R	—	R	D	—	R	AM	—	D	R	—	R	D	—	R	D	—	California	R	R	—	R	R	—	R	R	—	D	R	—	R	R	—	R	R	—	California	D	R	—	D	R	—	D	R	—	R	R	—	R	D	—	R	R	—	California	D	D	—	D	R	—	D	R	—	D	R	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D
Colorado																							Colorado															Colorado											2R	R	—	R	R	—	R	SR	—	R	Colorado	D	—	D	D	—	R	D	—	D	D	—	R	R	—	R	R	—	D	Colorado	D	—	D	D	—	D	R	—	D	R	—	R	D	—	R	R	—	R	Colorado	R	—	D	D	—	R	D	—	R	D	—	R	R	—	R	R	—	R	D	—	D	D	—	R	D	—	D	D
Connecticut	PA	—	PA	PA	—	F	F	—	F	F	—	F	F	—	F	F	—	DR	DR	—	AJ	AJ	Connecticut	—	AJ	AJ	—	D	W	—	D	W	—	W	D	—	R	Connecticut	R	—	R	R	—	R	R	—	LR	D	—	R	R	—	R	R	—	R	R	—	Connecticut	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	Connecticut	D	D	—	R	D	—	D	R	—	D	R	—	R	D	—	D	D	—	Connecticut	D	R	—	D	R	—	D	R	—	D	D	—	D	D	—	D	D	—	D	I	—	D	D	—	D	D	—	D
Delaware	PA	AA	—	PA	PA	—	F	F	—	F	F	—	F	F	—	F	F	—	F	F	—	J	Delaware	AJ	—	AJ	W	—	W	W	—	W	W	—	D	W	—	Delaware	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	R	—	D	D	Delaware	—	R	R	—	R	R	—	R	D	—	D	R	—	D	R	—	R	R	Delaware	—	R	D	—	D	R	—	R	D	—	R	D	—	R	R	—	R	R	Delaware	—	R	D	—	R	D	—	R	D	—	R	D	—	R	D	—	D	D	—	D	D	—	D	D	—	D	D	—
Florida																							Florida									2D	—	W	D	—	D	Florida	D	—	—	—	—	—	2R	—	R	D	—	D	D	—	D	D	—	D	D	—	Florida	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	Florida	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	Florida	R	D	—	D	D	—	R	D	—	D	R	—	D	R	—	D	D	—	R	D	—	R	D	—	R	R	—	R
Georgia	—	AA	AA	—	AA	F	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	J	—	Georgia	D	D	—	D	D	—	W	D	—	W	W	—	D	D	Georgia	—	D	—	—	—	R	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Georgia	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Georgia	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Georgia	D	—	D	D	—	D	R	—	D	D	—	D	R	—	D	R	—	R	R	—	R	R	—	R	R	—	D	D
Hawaii																							Hawaii															Hawaii																					Hawaii																			Hawaii														Sp	—	D	R	—	Hawaii	D	R	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D
Idaho																							Idaho															Idaho																		2R	—	R	Idaho	Po	—	SR	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	Idaho	D	—	R	D	—	R	D	—	D	R	—	R	D	—	R	D	—	R	Idaho	D	—	R	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R
Illinois																		2DR	—	DR	J	—	Illinois	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Illinois	—	D	R	—	R	R	—	R	R	—	I	R	—	R	R	—	R	D	—	R	Illinois	R	—	R	R	—	R	R	—	D	R	—	R	R	—	R	R	—	D	Illinois	D	—	D	D	—	R	D	—	D	R	—	D	R	—	D	R	—	R	Illinois	R	—	R	D	—	R	D	—	D	D	—	D	D	—	D	R	—	D	D	—	D	R	—	D	D	—	D	D
Indiana																	2DR	DR	DR	—	AJ	AJ	Indiana	—	AJ	D	—	W	W	—	D	D	—	D	D	—	D	Indiana	D	—	R	D	—	R	R	—	R	D	—	D	R	—	D	D	—	D	D	—	Indiana	R	R	—	R	R	—	D	D	—	D	R	—	R	D	—	R	R	—	Indiana	D	D	—	D	R	—	R	R	—	R	R	—	R	D	—	D	D	—	Indiana	D	D	—	D	R	—	R	R	—	R	R	—	R	R	—	D	R	—	D	R	—	R	D	—	R	R	—	R
Iowa																							Iowa											2D	—	D	FS	Iowa	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	Iowa	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	Iowa	D	—	D	D	—	R	R	—	D	R	—	R	R	—	R	R	—	R	Iowa	D	—	D	D	—	R	R	—	D	R	—	D	R	—	D	R	—	D	R	—	D	R	—	R	R	—	R	R
Kansas																							Kansas															Kansas			2R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	Po	—	R	Kansas	Po	—	R	R	—	R	R	—	D	R	—	R	R	—	R	R	—	R	Kansas	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	Kansas	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R
Kentucky					2AA	F	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	J	—	Kentucky	D	AJ	—	W	W	—	W	W	—	W	W	—	W	W	Kentucky	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Kentucky	R	—	D	D	—	D	R	—	D	D	—	D	R	—	R	D	—	D	Kentucky	D	—	D	D	—	D	D	—	D	D	—	D	R	—	R	R	—	R	Kentucky	R	—	D	D	—	D	D	—	R	D	—	R	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R
Year → Class → Congress →	1789 1 1st	1789 2 1st	1789 3 1st	1790 1 2nd	1792 2 3rd	1794 3 4th	1796 1 5th	1798 2 6th	1800 3 7th	1802 1 8th	1804 2 9th	1806 3 10th	1808 1 11th	1810 2 12th	1812 3 13th	1814 1 14th	1816 2 15th	1818 3 16th	1820 1 17th	1822 2 18th	1824 3 19th	1826 1 20th	Year → Class → Congress →	1828 2 21st	1830 3 22nd	1832 1 23rd	1834 2 24th	1836 3 25th	1838 1 26th	1840 2 27th	1842 3 28th	1844 1 29th	1846 2 30th	1848 3 31st	1850 1 32nd	1852 2 33rd	1854 3 34th	Year → Class → Congress →	1856 1 35th	1858 2 36th	1860 3 37th	1862 1 38th	1864 2 39th	1866 3 40th	1868 1 41st	1870 2 42nd	1872 3 43rd	1874 1 44th	1876 2 45th	1878 3 46th	1880 1 47th	1882 2 48th	1884 3 49th	1886 1 50th	1888 2 51st	1890 3 52nd	1892 1 53rd	1894 2 54th	Year → Class → Congress →	1896 3 55th	1898 1 56th	1900 2 57th	1902 3 58th	1904 1 59th	1906 2 60th	1908 3 61st	1910 1 62nd	1912 2 63rd	1914 3 64th	1916 1 65th	1918 2 66th	1920 3 67th	1922 1 68th	1924 2 69th	1926 3 70th	1928 1 71st	1930 2 72nd	Year → Class → Congress →	1932 3 73rd	1934 1 74th	1936 2 75th	1938 3 76th	1940 1 77th	1942 2 78th	1944 3 79th	1946 1 80th	1948 2 81st	1950 3 82nd	1952 1 83rd	1954 2 84th	1956 3 85th	1958 1 86th	1960 2 87th	1962 3 88th	1964 1 89th	1966 2 90th	Year → Class → Congress →	1968 3 91st	1970 1 92nd	1972 2 93rd	1974 3 94th	1976 1 95th	1978 2 96th	1980 3 97th	1982 1 98th	1984 2 99th	1986 3 100th	1988 1 101st	1990 2 102nd	1992 3 103rd	1994 1 104th	1996 2 105th	1998 3 106th	2000 1 107th	2002 2 108th	2004 3 109th	2006 1 110th	2008 2 111th	2010 3 112th	2012 1 113th	2014 2 114th	2016 3 115th	2018 1 116th	2020 2 117th	2022 3 118th
Louisiana															2DR	—	DR	DR	—	DR	AJ	—	Louisiana	D	D	—	D	D	—	W	W	—	D	D	—	W	D	Louisiana	—	D	—	—	—	—	2R	R	D	—	R	D	—	D	D	—	D	D	—	D	Louisiana	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Louisiana	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	Louisiana	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	R	—	D	R	—	R	R	—	R	R
Maine																			2DR	DR	—	J	Maine	AJ	—	D	D	—	D	W	—	D	D	—	D	W	—	Maine	D	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	Maine	—	R	R	—	R	R	—	D	R	—	R	R	—	R	R	—	R	R	Maine	—	R	R	—	R	R	—	R	R	—	R	R	—	D	R	—	D	R	Maine	—	D	D	—	D	R	—	D	R	—	D	R	—	R	R	—	R	R	—	R	R	—	I	R	—	I	R	—
Maryland	PA	—	PA	PA	—	F	F	—	DR	DR	—	DR	DR	—	F	F	—	DR	DR	—	J	J	Maryland	—	AJ	AJ	—	W	W	—	W	W	—	W	W	—	W	Maryland	A	—	D	U	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	Maryland	R	R	—	D	D	—	D	D	—	D	R	—	R	D	—	D	R	—	Maryland	D	D	—	D	D	—	D	D	—	R	R	—	R	R	—	D	D	—	Maryland	R	R	—	R	D	—	R	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D
Massachusetts	PA	PA	—	PA	PA	—	F	F	—	F	F	—	F	DR	—	F	F	—	F	F	—	AJ	Massachusetts	AJ	—	AJ	W	—	W	W	—	W	W	—	FS	W	—	Massachusetts	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	Massachusetts	—	R	R	—	R	R	—	R	R	—	R	D	—	R	R	—	D	D	Massachusetts	—	D	R	—	D	R	—	R	R	—	D	R	—	D	R	—	D	R	Massachusetts	—	D	R	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—
Michigan																							Michigan					2D	W		—	D	D	—	D	D	—	Michigan	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	Michigan	—	R	R	—	R	R	—	R	R	—	R	R	—	D	R	—	R	R	Michigan	—	R	D	—	R	R	—	R	R	—	R	D	—	D	D	—	D	R	Michigan	—	D	R	—	D	D	—	D	D	—	D	D	—	R	D	—	D	D	—	D	D	—	D	D	—	D	D	—
Minnesota																							Minnesota															Minnesota		Sp^[4]	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	Minnesota	—	R	R	—	R	R	—	R	R	—	R	R	—	FL	R	—	FL	R	Minnesota	—	FL	FL	—	R	R	—	R	D	—	R	D	—	D	D	—	D	D	Minnesota	—	D	D	—	D	R	—	R	R	—	R	D	—	R	D	—	D	R	—	D	D	—	D	D	—	D	D	—
Mississippi																	2DR	—	DR	DR	—	J	Mississippi	D	—	AJ	D	—	W	D	—	D	D	—	D	D	—	Mississippi	D	D	—	—	—	—	—	2R	—	R	D	—	D	D	—	D	D	—	D	D	Mississippi	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Mississippi	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Mississippi	—	D	D	—	D	R	—	D	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—
Missouri																			2DR	—	AJ	J	Missouri	—	D	D	—	D	D	—	D	D	—	D	W	—	D	Missouri	D	—	D	U	—	R	R	—	D	D	—	D	D	—	D	D	—	D	D	—	Missouri	D	D	—	D	R	—	D	D	—	D	D	—	R	D	—	D	R	—	Missouri	D	D	—	D	D	—	R	R	—	D	D	—	D	D	—	D	D	—	Missouri	D	D	—	D	R	—	D	R	—	R	R	—	R	R	—	R	R	—	R	D	—	R	D	—	R	R	—	R
Montana																							Montana															Montana																	2R	—	R	R	Montana	—	D	D	—	R	R	—	D	D	—	D	D	—	D	D	—	D	D	Montana	—	D	D	—	D	D	—	R	D	—	D	D	—	D	D	—	D	D	Montana	—	D	D	—	D	D	—	D	D	—	R	D	—	R	D	—	R	D	—	D	D	—	D	R	—	D	R	—
Nebraska																							Nebraska															Nebraska						2R	R	R	—	R	R	—	R	R	—	R	R	—	Po	R	Nebraska	—	R	R	—	R	R	—	D	R	—	D	R	—	R	R	—	R	R	Nebraska	—	D	I	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	Nebraska	—	R	R	—	D	D	—	D	D	—	D	D	—	D	R	—	D	R	—	D	R	—	R	R	—	R	R	—
Nevada																							Nevada															Nevada					2R	R	R	—	R	R	—	R	D	—	R	R	—	R	SR	—	Nevada	Si	SR	—	D	R	—	D	R	—	D	D	—	R	D	—	R	D	—	Nevada	D	D	—	D	D	—	D	R	—	D	R	—	D	D	—	D	D	—	Nevada	D	D	—	R	D	—	R	R	—	D	D	—	D	D	—	D	R	—	D	R	—	D	R	—	D	D	—	D
New Hampshire	—	AA	AA	—	PA	DR	—	F	F	—	DR	DR	—	DR	F	—	DR	DR	—	DR	J	—	New Hampshire	AJ	D	—	D	D	—	D	D	—	FS	D	—	D	R	New Hampshire	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	New Hampshire	R	—	R	R	—	R	R	—	D	R	—	R	R	—	R	R	—	R	New Hampshire	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	D	New Hampshire	R	—	D	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	D	R	—	D	D	—	D	D
New Jersey	PA	PA	—	PA	PA	—	F	F	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	AJ	New Jersey	AJ	—	AJ	D	—	W	W	—	W	W	—	D	D	—	New Jersey	D	R	—	D	D	—	D	R	—	D	D	—	R	D	—	D	D	—	D	R	New Jersey	—	R	R	—	R	R	—	D	D	—	R	R	—	D	R	—	R	R	New Jersey	—	D	D	—	R	R	—	R	R	—	R	R	—	D	R	—	D	R	New Jersey	—	D	R	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—
New Mexico																							New Mexico															New Mexico																					New Mexico									2R	—	D	R	—	D	D	—	R	D	New Mexico	—	R	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	New Mexico	—	D	R	—	R	R	—	D	R	—	D	R	—	D	R	—	D	R	—	D	D	—	D	D	—	D	D	—
New York	PA	—	PA	AA	—	F	F	—	DR	DR	—	DR	DR	—	F	DR	—	F	DR	—	AJ	J	New York	—	D	D	—	D	D	—	D	W	—	W	W	—	R	New York	R	—	R	R	—	R	R	—	R	D	—	R	R	—	R	R	—	D	D	—	New York	R	R	—	R	R	—	R	D	—	R	R	—	R	D	—	D	D	—	New York	D	D	—	D	D	—	D	R	—	D	R	—	R	R	—	R	D	—	New York	R	C	—	R	D	—	R	D	—	R	D	—	R	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D
North Carolina	—	PA	PA	—	AA	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	J	—	North Carolina	D	D	—	D	D	—	W	D	—	W	W	—	D	D	North Carolina	—	D	D	—	—	—	2R	D	D	—	D	D	—	D	D	—	D	D	—	Po	North Carolina	R	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	North Carolina	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	North Carolina	D	—	R	D	—	R	R	—	R	D	—	R	R	—	R	D	—	R	R	—	D	R	—	R	R	—	R	R
North Dakota																							North Dakota															North Dakota																	2R	R	D	—	North Dakota	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	North Dakota	R	R	—	R	R	—	D	R	—	R	R	—	R	R	—	R	D	—	North Dakota	R	D	—	R	D	—	R	D	—	D	D	—	D	D	—	D	D	—	D	D	—	R	D	—	R	R	—	R
Year → Class → Congress →	1789 1 1st	1789 2 1st	1789 3 1st	1790 1 2nd	1792 2 3rd	1794 3 4th	1796 1 5th	1798 2 6th	1800 3 7th	1802 1 8th	1804 2 9th	1806 3 10th	1808 1 11th	1810 2 12th	1812 3 13th	1814 1 14th	1816 2 15th	1818 3 16th	1820 1 17th	1822 2 18th	1824 3 19th	1826 1 20th	Year → Class → Congress →	1828 2 21st	1830 3 22nd	1832 1 23rd	1834 2 24th	1836 3 25th	1838 1 26th	1840 2 27th	1842 3 28th	1844 1 29th	1846 2 30th	1848 3 31st	1850 1 32nd	1852 2 33rd	1854 3 34th	Year → Class → Congress →	1856 1 35th	1858 2 36th	1860 3 37th	1862 1 38th	1864 2 39th	1866 3 40th	1868 1 41st	1870 2 42nd	1872 3 43rd	1874 1 44th	1876 2 45th	1878 3 46th	1880 1 47th	1882 2 48th	1884 3 49th	1886 1 50th	1888 2 51st	1890 3 52nd	1892 1 53rd	1894 2 54th	Year → Class → Congress →	1896 3 55th	1898 1 56th	1900 2 57th	1902 3 58th	1904 1 59th	1906 2 60th	1908 3 61st	1910 1 62nd	1912 2 63rd	1914 3 64th	1916 1 65th	1918 2 66th	1920 3 67th	1922 1 68th	1924 2 69th	1926 3 70th	1928 1 71st	1930 2 72nd	Year → Class → Congress →	1932 3 73rd	1934 1 74th	1936 2 75th	1938 3 76th	1940 1 77th	1942 2 78th	1944 3 79th	1946 1 80th	1948 2 81st	1950 3 82nd	1952 1 83rd	1954 2 84th	1956 3 85th	1958 1 86th	1960 2 87th	1962 3 88th	1964 1 89th	1966 2 90th	Year → Class → Congress →	1968 3 91st	1970 1 92nd	1972 2 93rd	1974 3 94th	1976 1 95th	1978 2 96th	1980 3 97th	1982 1 98th	1984 2 99th	1986 3 100th	1988 1 101st	1990 2 102nd	1992 3 103rd	1994 1 104th	1996 2 105th	1998 3 106th	2000 1 107th	2002 2 108th	2004 3 109th	2006 1 110th	2008 2 111th	2010 3 112th	2012 1 113th	2014 2 114th	2016 3 115th	2018 1 116th	2020 2 117th	2022 3 118th
Ohio										2DR	—	DR	DR	—	DR	DR	—	DR	DR	—	AJ	AJ	Ohio	—	AJ	D	—	D	D	—	D	W	—	FS	W	—	D	Ohio	R	—	R	R	—	R	D	—	R	D	—	D	R	—	D	R	—	D	R	—	Ohio	R	R	—	R	R	—	R	D	—	R	D	—	R	R	—	R	R	—	Ohio	D	D	—	R	R	—	R	R	—	R	R	—	D	D	—	D	D	—	Ohio	R	R	—	D	D	—	D	D	—	D	D	—	D	R	—	R	R	—	R	D	—	R	D	—	R	D	—	R
Oklahoma																							Oklahoma															Oklahoma																					Oklahoma						2D	D	—	D	D	—	D	R	—	R	D	—	D	Oklahoma	D	—	D	D	—	R	D	—	D	D	—	D	D	—	D	D	—	D	Oklahoma	R	—	R	R	—	D	R	—	D	R	—	D	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R
Oregon																							Oregon															Oregon		2D	R	—	R	R	—	D	R	—	D	D	—	R	R	—	R	R	—	R	Oregon	R	—	R	R	—	R	D	—	D	D	—	R	R	—	R	R	—	R	Oregon	R	—	R	R	—	R	R	—	R	R	—	D	D	—	D	D	—	R	Oregon	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	D	—	R	D	—	D	D	—	D	D	—	D	D
Pennsylvania	AA	—	PA	AA	—	F	F	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	AJ	J	Pennsylvania	—	D	D	—	D	D	—	D	D	—	W	D	—	D	Pennsylvania	R	—	R	D	—	R	R	—	R	D	—	R	R	—	R	R	—	R	R	—	Pennsylvania	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	Pennsylvania	R	D	—	R	D	—	D	R	—	R	R	—	D	R	—	D	R	—	Pennsylvania	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	D	—	R	D	—	R	D	—	D
Rhode Island	PA	AA	—	PA	PA	—	F	F	—	DR	DR	—	F	DR	—	F	F	—	DR	DR	—	AJ	Rhode Island	AJ	—	AJ	W	—	W	W	—	W	W	—	D	D	—	Rhode Island	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	Rhode Island	—	R	R	—	R	R	—	R	R	—	D	R	—	D	R	—	R	R	Rhode Island	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Rhode Island	—	D	D	—	R	D	—	R	D	—	R	D	—	R	D	—	R	D	—	D	D	—	D	D	—	D	D	—
South Carolina	—	PA	PA	—	AA	F	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	J	—	South Carolina	D	Nu	—	Nu	W	—	D	D	—	D	D	—	D	D	South Carolina	—	D	—	—	—	—	2R	R	R	—	D	D	—	D	D	—	D	D	—	D	South Carolina	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	South Carolina	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	R	South Carolina	D	—	R	D	—	R	D	—	R	D	—	R	D	—	R	D	—	R	R	—	R	R	—	R	R	—	R	R
South Dakota																							South Dakota															South Dakota																	2R	I	—	R	South Dakota	Po	—	R	R	—	R	R	—	R	D	—	R	R	—	R	R	—	D	South Dakota	R	—	D	R	—	R	R	—	R	R	—	R	R	—	R	D	—	R	South Dakota	D	—	D	D	—	R	R	—	R	D	—	R	D	—	D	D	—	D	R	—	D	R	—	R	R	—	R	R
Tennessee							2DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	J	Tennessee	D	—	D	W	—	D	W	—	D	W	—	W	W	—	Tennessee	D	D	—	—	—	Sp	R	D	—	D	D	—	D	D	—	D	D	—	D	D	Tennessee	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Tennessee	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	R	Tennessee	—	R	R	—	D	R	—	D	D	—	D	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—
Texas																							Texas										2D	—	D	D	—	Texas	D	D	—	—	—	—	—	2R	—	D	D	—	D	D	—	D	D	—	D	D	Texas	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Texas	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	R	Texas	—	D	R	—	D	R	—	D	R	—	D	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—
Utah																							Utah															Utah																					Utah	Sp^[5]	R	—	R	R	—	R	R	—	R	D	—	R	D	—	R	D	—	Utah	D	D	—	D	D	—	D	R	—	R	R	—	R	D	—	R	D	—	Utah	R	D	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R
Vermont				2AA	—	F	F	—	F	DR	—	DR	DR	—	DR	F	—	DR	DR	—	AJ	AJ	Vermont	—	AJ	AJ	—	W	W	—	W	W	—	W	W	—	W	Vermont	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	Vermont	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	Vermont	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	Vermont	R	R	—	D	R	—	D	R	—	D	R	—	D	R	—	D	R	—	D	I	—	D	I	—	D	I	—	D
Virginia	AA	AA	—	AA	AA	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	DR	DR	—	J	Virginia	D	—	AJ	W	—	W	W	—	D	D	—	D	D	—	Virginia	D	D	—	U^[6]	N^[7]	—	—	Sp	—	D	D	—	Ra	Ra	—	D	D	—	D	D	Virginia	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Virginia	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	Virginia	—	I	R	—	I	R	—	R	R	—	D	R	—	D	R	—	R	R	—	D	D	—	D	D	—	D	D	—
Washington																							Washington															Washington																	2R	R	R	—	Washington	R	R	—	R	R	—	R	R	—	R	R	—	R	D	—	R	D	—	Washington	D	D	—	D	D	—	D	R	—	D	D	—	D	D	—	D	D	—	Washington	D	D	—	D	D	—	R	D	—	D	R	—	D	R	—	D	D	—	D	D	—	D	D	—	D	D	—	D
West Virginia																							West Virginia															West Virginia				2U	R	—	R	D	—	D	D	—	D	D	—	D	D	—	D	R	West Virginia	—	R	R	—	R	R	—	D	R	—	R	R	—	D	R	—	R	D	West Virginia	—	D	D	—	D	R	—	D	D	—	D	D	—	D	D	—	D	D	West Virginia	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	D	—	D	R	—	D	R	—
Wisconsin																							Wisconsin											2D	D	—	R	Wisconsin	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	D	D	—	Wisconsin	R	R	—	R	R	—	R	R	—	D	R	—	R	R	—	R	R	—	Wisconsin	D	Pr	—	R	R	—	R	R	—	R	R	—	R	D	—	D	D	—	Wisconsin	D	D	—	D	D	—	R	D	—	R	D	—	D	D	—	D	D	—	D	D	—	R	D	—	R	D	—	R
Wyoming																							Wyoming															Wyoming																		2R	R	R	Wyoming	—	R	R	—	R	R	—	R	R	—	D	R	—	D	R	—	D	R	Wyoming	—	D	D	—	D	R	—	D	D	—	R	D	—	D	R	—	D	R	Wyoming	—	D	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—	R	R	—
Year → Class → Congress →	1789 1 1st	1789 2 1st	1789 3 1st	1790 1 2nd	1792 2 3rd	1794 3 4th	1796 1 5th	1798 2 6th	1800 3 7th	1802 1 8th	1804 2 9th	1806 3 10th	1808 1 11th	1810 2 12th	1812 3 13th	1814 1 14th	1816 2 15th	1818 3 16th	1820 1 17th	1822 2 18th	1824 3 19th	1826 1 20th	Year → Class → Congress →	1828 2 21st	1830 3 22nd	1832 1 23rd	1834 2 24th	1836 3 25th	1838 1 26th	1840 2 27th	1842 3 28th	1844 1 29th	1846 2 30th	1848 3 31st	1850 1 32nd	1852 2 33rd	1854 3 34th	Year → Class → Congress →	1856 1 35th	1858 2 36th	1860 3 37th	1862 1 38th	1864 2 39th	1866 3 40th	1868 1 41st	1870 2 42nd	1872 3 43rd	1874 1 44th	1876 2 45th	1878 3 46th	1880 1 47th	1882 2 48th	1884 3 49th	1886 1 50th	1888 2 51st	1890 3 52nd	1892 1 53rd	1894 2 54th	Year → Class → Congress →	1896 3 55th	1898 1 56th	1900 2 57th	1902 3 58th	1904 1 59th	1906 2 60th	1908 3 61st	1910 1 62nd	1912 2 63rd	1914 3 64th	1916 1 65th	1918 2 66th	1920 3 67th	1922 1 68th	1924 2 69th	1926 3 70th	1928 1 71st	1930 2 72nd	Year → Class → Congress →	1932 3 73rd	1934 1 74th	1936 2 75th	1938 3 76th	1940 1 77th	1942 2 78th	1944 3 79th	1946 1 80th	1948 2 81st	1950 3 82nd	1952 1 83rd	1954 2 84th	1956 3 85th	1958 1 86th	1960 2 87th	1962 3 88th	1964 1 89th	1966 2 90th	Year → Class → Congress →	1968 3 91st	1970 1 92nd	1972 2 93rd	1974 3 94th	1976 1 95th	1978 2 96th	1980 3 97th	1982 1 98th	1984 2 99th	1986 3 100th	1988 1 101st	1990 2 102nd	1992 3 103rd	1994 1 104th	1996 2 105th	1998 3 106th	2000 1 107th	2002 2 108th	2004 3 109th	2006 1 110th	2008 2 111th	2010 3 112th	2012 1 113th	2014 2 114th	2016 3 115th	2018 1 116th	2020 2 117th	2022 3 118th
						First Party System																		Second Party System															Third Party System																					Fourth Party System																			Fifth Party System																			Sixth Party System

Analytical tables

Last updated after the 2014 elections.

Results

	First Party System			Second Party System				Third Party System				Fourth Party System					Fifth Party System				Sixth Party System				Overall since 1828
State	DR votes	F votes	% DR	D votes	AJ/W votes	Other votes	% D	D votes	R votes	Other votes	% D	D votes	R votes	Other votes	% D	State	D votes	R votes	Other votes	% D	D votes	R votes	Other votes	% D	D votes	R votes	Other votes	% D
Alabama	3	0	100	10	0	0	100	9	3	0	75	12	0	0	100	Alabama	12	0	0	100	8	8	0	50	51	11	0	82
Alaska																Alaska	5	0	0	100	3	13	0	19	8	13	0	38
Arizona												7	1	0	88	Arizona	9	3	0	75	3	13	0	19	19	17	0	53
Arkansas				8	0	0	100	9	4	0	69	12	0	0	100	Arkansas	12	0	0	100	13	3	0	81	54	7	0	89
California				3	0	0	100	6	6	1	46	1	11	0	8	California	4	8	0	33	13	3	0	81	27	28	1	48
Colorado								0	7	1	0	7	5	0	58	Colorado	6	6	0	50	7	9	0	44	20	27	1	42
Connecticut	2	8	20	3	5	1	33	1	11	1	8	0	12	0	0	Connecticut	8	4	0	67	13	3	0	81	24	31	7	39
Delaware	0	10	0	1	8	0	11	13	1	0	93	3	9	0	25	Delaware	4	8	0	33	11	5	0	69	32	31	8	45
Florida				4	1	0	80	8	3	0	73	12	0	0	100	Florida	12	0	0	100	10	6	0	63	46	9	1	82
Georgia	9	1	90	7	3	0	70	10	1	0	91	12	0	0	100	Georgia	12	0	0	100	8	8	0	50	49	9	3	80
Hawaii																Hawaii	2	3	0	40	15	1	0	94	17	4	0	81
Idaho								0	3	0	0	0	10	2	0	Idaho	6	6	0	50	2	14	0	13	8	33	2	19
Illinois	3	0	100	10	0	0	100	2	10	1	15	2	10	0	17	Illinois	7	5	0	58	11	5	0	69	32	30	1	51
Indiana	4	0	100	6	3	0	67	8	5	0	62	4	8	0	33	Indiana	6	6	0	50	6	10	0	38	30	29	3	48
Iowa				3	0	1	75	0	13	0	0	0	12	0	0	Iowa	4	8	0	33	8	8	0	50	15	41	1	26
Kansas								0	12	1	0	1	10	1	8	Kansas	1	11	0	8	0	16	0	0	2	49	2	4
Kentucky	9	1	90	1	9	0	10	13	0	0	100	8	4	0	67	Kentucky	8	4	0	67	6	10	0	38	36	28	9	49
Louisiana	5	0	100	7	3	0	70	8	4	0	67	12	0	0	100	Louisiana	12	0	0	100	13	3	0	81	52	7	3	84
Maine	3	0	100	6	3	0	66	1	13	0	7	1	11	0	8	Maine	2	10	0	17	5	10	1	31	15	44	4	24
Maryland	6	4	60	0	9	0	0	11	0	2	85	7	5	0	58	Maryland	8	4	0	67	12	4	0	75	38	13	11	61
Massachusetts	1	9	10	0	8	1	0	0	14	0	0	3	9	0	25	Massachusetts	5	7	0	42	15	1	0	94	23	31	9	37
Michigan				6	1	0	86	0	14	0	0	1	11	0	8	Michigan	5	7	0	42	14	2	0	88	26	34	1	43
Minnesota								1	13	0	7	0	10	2	0	Minnesota	6	4	2	50	10	6	0	63	17	33	4	31
Mississippi	4	0	100	7	2	0	78	9	3	0	75	12	0	0	100	Mississippi	12	0	0	100	4	12	0	25	44	15	2	72
Missouri	2	0	100	8	1	0	89	10	2	1	77	9	3	0	75	Missouri	10	2	0	83	6	10	0	38	43	17	2	69
Montana								0	4	0	0	10	2	0	83	Montana	11	1	0	92	12	4	0	75	33	11	0	75
Nebraska								0	11	1	0	2	10	0	17	Nebraska	1	10	1	8	10	6	0	63	13	37	2	25
Nevada								1	10	1	8	6	4	2	50	Nevada	10	2	0	83	10	6	0	63	27	22	3	52
New Hampshire	7	3	70	7	1	2	70	0	13	0	0	1	11	0	8	New Hampshire	2	10	0	17	4	12	0	25	14	47	2	22
New Jersey	8	2	80	3	6	0	33	10	4	0	71	3	9	0	25	New Jersey	4	8	0	33	15	1	0	94	35	22	6	56
New Mexico												4	4	0	50	New Mexico	11	1	0	92	9	7	0	56	24	12	0	67
New York	6	4	60	5	3	1	63	3	10	0	23	4	8	0	33	New York	7	5	0	58	10	5	1	63	29	29	4	47
North Carolina	10	0	100	7	3	0	70	10	2	1	77	11	1	0	92	North Carolina	12	0	0	100	5	11	0	31	45	14	4	71
North Dakota								1	3	0	25	0	12	0	0	North Dakota	2	10	0	17	12	4	0	75	15	29	0	34
Ohio	8	0	100	5	3	1	56	5	8	0	38	2	10	0	17	Ohio	6	6	0	50	9	7	0	56	27	31	4	44
Oklahoma												8	2	0	80	Oklahoma	11	1	0	92	3	13	0	19	22	16	0	58
Oregon								5	9	0	31	3	9	0	25	Oregon	4	8	0	33	5	11	0	31	17	37	0	31
Pennsylvania	8	2	80	8	1	0	89	2	11	0	15	0	12	0	0	Pennsylvania	5	7	0	42	2	14	0	13	17	44	1	27
Rhode Island	5	5	50	2	7	0	22	0	14	0	0	2	10	0	17	Rhode Island	12	0	0	100	11	5	0	69	27	29	7	43
South Carolina	9	1	90	7	1	2	70	8	4	0	66	12	0	0	100	South Carolina	11	1	0	92	6	10	0	38	44	15	3	71
South Dakota								0	3	1	0	2	9	1	17	South Dakota	2	10	0	17	9	7	0	56	13	29	2	30
Tennessee	11	0	100	4	5	0	44	12	2	0	86	12	0	0	100	Tennessee	11	1	0	92	5	11	0	31	44	14	5	70
Texas				4	0	0	100	10	2	0	83	12	0	0	100	Texas	11	1	0	92	4	12	0	25	39	15	0	72
Utah												4	9	0	31	Utah	7	5	0	58	1	15	0	6	12	29	0	29
Vermont	6	4	60	0	9	0	0	0	13	0	0	0	12	0	0	Vermont	0	12	0	0	7	7	2	44	7	44	11	11
Virginia	10	0	100	5	4	0	56	9	1	3	69	12	0	0	100	Virginia	12	0	0	100	6	8	2	38	44	9	9	71
Washington								0	4	0	0	2	10	0	17	Washington	11	1	0	92	13	3	0	81	26	18	0	59
West Virginia								8	3	2	62	3	9	0	25	West Virginia	11	1	0	92	15	1	0	94	37	14	2	70
Wisconsin				3	0	1	75	2	11	0	15	1	11	0	8	Wisconsin	4	7	1	33	13	3	0	81	23	33	1	40
Wyoming								0	4	0	0	3	9	0	25	Wyoming	8	4	0	67	1	15	0	6	12	32	0	27
Northeast	46	37	55	34	43	5	41	17	103	1	14	14	94	0	13	Northeast	45	63	0	42	82	56	4	58	191	319	51	34
South	76	17	82	72	48	2	59	147	33	6	79	160	30	0	84	South	171	21	0	89	129	123	2	51	679	217	58	71
Midwest	17	0	100	41	8	3	79	29	94	5	23	22	116	4	15	Midwest	58	84	4	40	108	85	0	56	258	380	23	39
West				3	0	0	100	12	47	3	19	47	74	4	38	West	95	48	0	66	94	114	0	45	251	283	7	46
United States	139	54	72	150	95	10	59	205	277	15	41	143	314	8	31	United States	369	216	4	63	412	378	7	52	1378	1199	140	51
State	DR votes	F votes	% DR	D votes	AJ/W votes	Other votes	% D	D votes	R votes	Other votes	% D	D votes	R votes	Other votes	% D	State	D votes	R votes	Other votes	% D	D votes	R votes	Other votes	% D	D votes	R votes	Other votes	% D
	First Party System			Second Party System				Third Party System				Fourth Party System					Fifth Party System				Sixth Party System				Overall since 1828

States across party systems

S indicates that a state was split between the two major parties and did not elect either party more than 60 percent of the time. A * sign indicates that a state elected that party at least 80 percent of the time. No * sign indicates that the state elected that party between 60 and 80 percent of the time.

	Party systems
State	1789-1792	1st	1824-1826	2nd	3rd	4th	5th	6th	2000-2014^[8]
Alabama	—	DR*	J	D*	D	D*	D*	S	R*
Alaska	—	—	—	—	—	—	D*	R*	R*
Arizona	—	—	—	—	—	D*	D	R*	R*
Arkansas	—	—	—	D*	D	D*	D*	D*	D
California	—	—	—	—	S	R*	R	D*	D*
Colorado	—	—	—	—	R*	S	S	S	D
Connecticut	PA*	F*	AJ	W	R*	R*	D	D*	D*
Delaware	PA	F*	J	W*	D*	R	R	D	D*
Florida	—	—	—	D*	D	D*	D*	D	D
Georgia	AA*	DR*	J	D	D*	D*	D*	S	R*
Hawaii	—	—	—	—	—	—	R	D*	D*
Idaho	—	—	—	—	R*	R*	S	R*	R*
Illinois	—	DR*	J	D*	R	R*	S	D	D*
Indiana	—	DR*	AJ	D	D	R	S	R	R
Iowa	—	—	—	D	R*	R*	R	S	R
Kansas	—	—	—	—	R*	R*	R*	R*	R*
Kentucky	AA*	DR*	J	W*	D*	D	D	R	R*
Louisiana	—	DR*	AJ	D	D	D*	D*	D*	R
Maine	—	DR*	J	D	R*	R*	R*	R	R*
Maryland	PA*	DR	J	W*	D*	S	D	D	D*
Massachusetts	PA*	F*	AJ	W*	R*	R	S	D*	D*
Michigan	—	—	—	D*	R*	R*	S	D*	D*
Minnesota	—	—	—	—	R*	R*	S	D	D*
Mississippi	—	DR*	J	D	D	D*	D*	R	R*
Missouri	—	DR*	S	D*	D	D	D*	R	R
Montana	—	—	—	—	R*	D*	D*	D	D
Nebraska	—	—	—	—	R*	R*	R*	D	S
Nevada	—	—	—	—	R*	S	D*	D	R
New Hampshire	AA	DR	J	D	R*	R*	R*	R	R
New Jersey	S	DR*	AJ	W	D	R	R	D*	D*
New Mexico	—	—	—	—	—	S	D*	S	D*
New York	AA	DR	J	D	R	R	S	D	D*
North Carolina	PA	DR*	J	D	D	D*	D*	R	R*
North Dakota	—	—	—	—	R	R*	R*	D	D*
Ohio	—	DR*	AJ	S	R	R*	S	S	R
Oklahoma	—	—	—	—	—	D*	D*	R*	R*
Oregon	—	—	—	—	R	R	R	R	D*
Pennsylvania	AA	DR*	S	D*	R*	R*	S	R*	R
Rhode Island	PA	S	AJ	W	R*	R*	D*	D	D*
South Carolina	PA	DR*	J	D	D	D*	D*	R	R*
South Dakota	—	—	—	—	R	R*	R*	S	R
Tennessee	—	DR*	J	S	D*	D*	D*	R	R*
Texas	—	—	—	D*	D*	D*	D*	R	R*
Utah	—	—	—	—	—	R	S	R*	R*
Vermont	AA*	DR	AJ	W*	R*	R*	R*	S	S
Virginia	AA*	DR*	J	S	D	D*	D*	S	D
Washington	—	—	—	—	R*	R*	D*	D*	D*
West Virginia	—	—	—	—	D	R	D*	D*	D*
Wisconsin	—	—	—	D	R*	R*	S	D*	D*
Wyoming	—	—	—	—	R*	R	D	R*	R*
State	1789-1792	1st	1824-1826	2nd	3rd	4th	5th	6th	2000- 2014

Region	1789-1792	1st	1824-1826	2nd	3rd	4th	5th	6th	2000-2014^[8]
Northeast	PA	S	AJ	S	R*	R*	S	S	D
South	S	DR*	J*	S	D	D*	D*	S	R
Midwest	—	DR*	AJ	D	R	R*	S	S	S
West	—	—	—	D*	R	S	D	S	S
United States	S	DR	S	S	S	R	D	S	S

References

Martis, Kenneth C. The Historical Atlas of Political Parties in the United States Congress.

Notes

^ Candidates from two different parties were elected. This occasionally occurred when a state delegation was first admitted or re-admitted to the Senate. Unless otherwise noted, the split was between the Republican and Democratic parties.
^ Includes all candidates elected by Unionist parties.
^ There is no consensus definition for the beginning or ending date of the Sixth Party System.
^ Two Democrats were elected in 1858, but a Republican replaced one of the Democrats in an 1859 election.
^ Two Republicans were elected in 1896, but a Democrat replaced a Republican in an 1897 election.
^ Elected by the Restored Government of Virginia.
^ The Virginia legislature elected two Unionists in 1865, but the Senate refused to seat either candidate.
^ ^a ^b Note that these elections are also part of the Sixth Party System.

[1] Candidates from two different parties were elected. This occasionally occurred when a state delegation was first admitted or re-admitted to the Senate. Unless otherwise noted, the split was between the Republican and Democratic parties.

[2] Includes all candidates elected by Unionist parties.

[Sixth-3] There is no consensus definition for the beginning or ending date of the Sixth Party System.

[MN58-4] Two Democrats were elected in 1858, but a Republican replaced one of the Democrats in an 1859 election.

[Ut96-5] Two Republicans were elected in 1896, but a Democrat replaced a Republican in an 1897 election.

[VA62-6] Elected by the Restored Government of Virginia.

[VA64-7] The Virginia legislature elected two Unionists in 1865, but the Senate refused to seat either candidate.

[noseventhyet-8] Note that these elections are also part of the Sixth Party System.

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