2018 United States House of Representatives elections in Oklahoma

2018 Oklahoma's 2nd congressional district election
← 2016 2020 →
	Precinct and county-level results
U.S. Representative before election; Markwayne Mullin; Republican	Elected U.S. Representative ; Markwayne Mullin; Republican

2018 Oklahoma's 1st congressional district election
← 2016 2020 →
	Precinct and county-level results
U.S. Representative before election; Vacant;	Elected U.S. Representative ; Kevin Hern; Republican

2018 United States House of Representatives elections in Oklahoma
All 5 Oklahoma seats to the United States House of Representatives
Republican 40–50% 50–60% 60–70% 70–80% 80–90% >90%	Democratic 50–60%

The 2018 United States House of Representatives elections in Oklahoma were held on November 6, 2018, to elect the five U.S. representatives from the state of Oklahoma, one from each of the state's five congressional districts. The elections coincided with other elections to the House of Representatives, elections to the United States Senate and various state and local elections. Primary elections were held on June 26 and runoff elections were held two months later on August 28.^[1] The state's U.S. House delegation Republican majority changed from 5–0 to 4–1. As of 2023 this is the only time since 2010 that Democrats won any house race in Oklahoma.

Results summary

Statewide

Popular vote

Republican			61.97%
Democratic			36.35%
Independent			1.33%
Libertarian			0.35%

House seats

Republican			80.00%
Democratic			20.00%

District

Results of the 2018 United States House of Representatives elections in Oklahoma by district:^[2]

District	Republican		Democratic		Others		Total		Result

	Votes	%	Votes	%	Votes	%	Votes	%
District 1	150,129	59.30%	103,042	40.70%	0	0.00%	253,171	100.00%	Republican hold
District 2	140,451	65.02%	65,021	30.10%	10,530	4.87%	216,002	100.00%	Republican hold
District 3	172,913	73.87%	61,152	26.13%	0	0.00%	234,065	100.00%	Republican hold
District 4	149,227	63.06%	78,088	33.00%	9,323	3.94%	236,638	100.00%	Republican hold
District 5	117,811	49.30%	121,149	50.70%	0	0.00%	238,960	100.00%	Democratic gain
Total	730,531	61.97%	428,452	36.35%	19,853	1.68%	1,178,836	100.00%

District 1

The 1st district is located in the Tulsa metropolitan area and includes Creek, Rogers, Tulsa, Wagoner and Washington counties. Incumbent Republican Jim Bridenstine, who had represented the district since 2013, resigned on April 23 to become NASA Administrator. He was re-elected unopposed in 2016. The district had a PVI of R+17.

Republican primary

During his initial election in 2012, Bridenstine self-imposed a three term limit. Bridenstine confirmed that he will honor his term-limit pledge.^[3]

Bridenstine became Administrator of NASA in the Donald Trump administration, and resigned on April 23.^[4]

Candidates

Nominee

Kevin Hern, businessman

Eliminated in primary

Andy Coleman, veteran
Nathan Dahm, state senator
Tim Harris, former Tulsa County District Attorney^[5]
Danny Stockstill

Declined

Dewey F. Bartlett Jr., former Mayor of Tulsa^[5]
John D. Doak, Oklahoma Insurance Commissioner^[5]
Dan Newberry, state senator^[5]
Everett Piper, Oklahoma Wesleyan University President^[5]
Scott Pruitt, Administrator of the Environmental Protection Agency, former State Attorney General and candidate for this seat in 2002^[5]^[6]
T.W. Shannon, former Speaker of the Oklahoma House of Representatives^[5]

Endorsements

Andy Coleman

Organizations

Nathan Dahm

Organizations

Kevin Hern

Organizations

Republican Main Street Partnership^[9]

Results

Republican primary results
Party		Candidate	Votes	%
	Republican	Tim Harris	28,392	27.5
	Republican	Kevin Hern	23,425	22.7
	Republican	Andy Coleman	22,584	21.9
	Republican	Nathan Dahm	20,843	20.2
	Republican	Danny Stockstill	8,086	7.8
Total votes			103,330	100.0

Runoff

Polling

Poll source	Date(s) administered	Sample size	Margin of error	Tim Harris	Kevin Hern	Undecided
SoonerPoll^[10]	July 24–29, 2018	811	± 3.4%	38%	26%	36%

Results

Republican primary runoff results
Party		Candidate	Votes	%
	Republican	Kevin Hern	40,373	54.9
	Republican	Tim Harris	33,138	45.1
Total votes			73,511	100.0

Democratic primary

Candidates

Nominee

Tim Gilpin, attorney, and former Oklahoma State Board of Education member^[11]

Eliminated in primary

Amanda Douglas, business analyst, energy consultant and member of the Cherokee Nation^[12]
Gwendolyn Fields
Mark Keeter
David Hullum

Declined

Kathy Taylor, former Mayor of Tulsa^[5]

Results

Democratic primary results
Party		Candidate	Votes	%
	Democratic	Tim Gilpin	24,532	34.5
	Democratic	Amanda Douglas	23,045	32.4
	Democratic	Gwendolyn Fields	13,947	19.6
	Democratic	Mark Keeter	6,013	8.5
	Democratic	David Hullum	3,573	5.0
Total votes			71,110	100.0

Runoff results

Democratic primary runoff results
Party		Candidate	Votes	%
	Democratic	Tim Gilpin	16,985	59.4
	Democratic	Amanda Douglas	11,620	40.6
Total votes			28,605	100.0

General election

Polling

Poll source	Date(s) administered	Sample size	Margin of error	Kevin Hern (R)	Tim Gilpin (D)	Undecided
SoonerPoll^[13]	September 15–25, 2018	306	± 5.6%	54%	32%	14%

Predictions

Source	Ranking	As of
The Cook Political Report^[14]	Safe R	November 5, 2018
Inside Elections^[15]	Safe R	November 5, 2018
Sabato's Crystal Ball^[16]	Safe R	November 5, 2018
RCP^[17]	Safe R	November 5, 2018
Daily Kos^[18]	Safe R	November 5, 2018
538^[19]	Safe R	November 7, 2018
CNN^[20]	Safe R	October 31, 2018
Politico^[21]	Safe R	November 2, 2018

Results

Oklahoma's 1st congressional district, 2018
Party		Candidate	Votes	%
	Republican	Kevin Hern	150,129	59.3
	Democratic	Tim Gilpin	103,042	40.7
Total votes			253,171	100.0
	Republican hold

District 2

The 2nd district is located in the regions of Green Country and Kiamichi Country and includes the city of Muskogee and numerous sparsely populated counties. The incumbent is Republican Markwayne Mullin, who has represented the district since 2013. He was re-elected with 71% of the vote in 2016.

Republican primary

Mullin had pledged to serve only three terms when he was first elected in 2012. During the 2016 campaign, Mullin stated he was reassessing his pledge, and refused to rule out running again in 2018.^[22]

Candidates

Nominee

Markwayne Mullin, incumbent U.S. Representative

Eliminated in primary

Brian Jackson
Jarrin Jackson, veteran, conservative activist and candidate for the seat in 2016^[23]
John McCarthy

Declined

Endorsements

Jarrin Jackson

U.S. Senators

Tom Coburn, former U.S. Senator (R-OK)^[24]

Results

Republican primary results
Party		Candidate	Votes	%
	Republican	Markwayne Mullin (incumbent)	32,624	54.1
	Republican	Jarrin Jackson	15,191	25.2
	Republican	Brian Jackson	6,899	11.5
	Republican	John McCarthy	5,536	9.2
Total votes			60,250	100.0

Democratic primary

Candidates

Nominee

Jason Nichols, Mayor of Tahlequah

Eliminated in primary

Elijah McIntosh
Clay Padgett, retired army lieutenant colonel and public educator

Declined

Bill John Baker, Principal Chief of the Cherokee Nation^[5]
Sean Burrage, Southeastern Oklahoma State University President ^[5]
Kalyn Free, former District Attorney for Haskell & Pittsburg counties and candidate for this seat in 2004^[5]

Results

Democratic primary results
Party		Candidate	Votes	%
	Democratic	Jason Nichols	32,549	37.9
	Democratic	Clay Padgett	20,796	24.2
	Democratic	Elijah McIntosh	16,343	19.0
	Democratic	Virginia Jenner	16,204	18.9
Total votes			85,892	100.0

Runoff results

Democratic primary runoff results
Party		Candidate	Votes	%
	Democratic	Jason Nichols	19,548	56.8
	Democratic	Clay Padgett	14,845	43.2
Total votes			34,393	100.0

General election

Polling

Poll source	Date(s) administered	Sample size	Margin of error	Markwayne Mullin (R)	Jason Nichols (D)	Richard Castaldo (L)	John Foreman (I)	Undecided
SoonerPoll^[25]	September 15–25, 2018	306	± 5.6%	46%	32%	4%	6%	12%

Predictions

Source	Ranking	As of
The Cook Political Report^[14]	Safe R	November 5, 2018
Inside Elections^[15]	Safe R	November 5, 2018
Sabato's Crystal Ball^[16]	Safe R	November 5, 2018
RCP^[17]	Safe R	November 5, 2018
Daily Kos^[18]	Safe R	November 5, 2018
538^[19]	Safe R	November 7, 2018
CNN^[20]	Safe R	October 31, 2018
Politico^[21]	Safe R	November 2, 2018

Results

Oklahoma's 2nd congressional district, 2018
Party		Candidate	Votes	%
	Republican	Markwayne Mullin (incumbent)	140,451	65.0
	Democratic	Jason Nichols	65,021	30.1
	Independent	John Foreman	6,390	3.0
	Libertarian	Richard Castaldo	4,140	1.9
Total votes			216,002	100.0
	Republican hold

District 3

2018 Oklahoma's 3rd congressional district election

← 2016

2020 →


Nominee	Frank Lucas	Frankie Robbins
Party	Republican	Democratic
Popular vote	172,913	61,152
Percentage	73.9%	26.1%

Precinct and county-level results

U.S. Representative before election

Frank Lucas
Republican

Elected U.S. Representative

Frank Lucas
Republican

The 3rd district is located in Western Oklahoma. The largest district in Oklahoma and one of the largest in the country, it includes the Oklahoma Panhandle, Ponca City and the city of Stillwater as well as the Osage Nation. Incumbent Republican Frank Lucas, who had represented the district since 2003 and previously represented the 6th district from 1994 to 2003, ran for re-election. He was re-elected with 78% of the vote in 2016. The district had a PVI of R+27.

Republican primary

Candidates

Nominee

Frank Lucas, incumbent U.S. Representative

Democratic primary

Candidates

Nominee

Frankie Robbins, engineer

Eliminated in primary

Murray Thibodeaux

Results

Democratic primary results
Party		Candidate	Votes	%
	Democratic	Frankie Robbins	38,733	64.8
	Democratic	Murray Thibodeaux	20,998	35.2
Total votes			59,731	100.0

General election

Polling

Poll source	Date(s) administered	Sample size	Margin of error	Frank Lucas (R)	Frankie Robbins (D)	Undecided
SoonerPoll^[26]	September 15–25, 2018	267	± 6.0%	54%	24%	22%

Predictions

Source	Ranking	As of
The Cook Political Report^[14]	Safe R	November 5, 2018
Inside Elections^[15]	Safe R	November 5, 2018
Sabato's Crystal Ball^[16]	Safe R	November 5, 2018
RCP^[17]	Safe R	November 5, 2018
Daily Kos^[18]	Safe R	November 5, 2018
538^[19]	Safe R	November 7, 2018
CNN^[20]	Safe R	October 31, 2018
Politico^[21]	Safe R	November 2, 2018

Results

Oklahoma's 3rd congressional district, 2018
Party		Candidate	Votes	%
	Republican	Frank Lucas (incumbent)	172,913	73.9
	Democratic	Frankie Robbins	61,152	26.1
Total votes			234,065	100.0
	Republican hold

District 4

2018 Oklahoma's 4th congressional district election

← 2016

2020 →


Nominee	Tom Cole	Mary Brannon
Party	Republican	Democratic
Popular vote	149,227	78,088
Percentage	63.1%	33.0%

Precinct and county-level results

U.S. Representative before election

Tom Cole
Republican

Elected U.S. Representative

Tom Cole
Republican

The 4th district is located in South Central Oklahoma and includes the suburbs of Oklahoma City, such as the counties of Canadian, Comanche and Cleveland and numerous other sparsely populated counties. Incumbent Republican Tom Cole, who had represented the district since 2003, ran for re-election. He was re-elected with 70% of the vote in 20. The district had a PVI of R+20.

Republican primary

Candidates

Nominee

Tom Cole, incumbent U.S. Representative

Eliminated in primary

James Taylor

Results

Republican primary results
Party		Candidate	Votes	%
	Republican	Tom Cole (incumbent)	55,891	64.7
	Republican	James Taylor	30,441	35.3
Total votes			86,332	100.0

Democratic primary

Candidates

Nominee

Mary Brannon, teacher

Eliminated in primary

Fred Gipson, former Chief Counsel to the University of Oklahoma
Roxann Klutts
Mallory Varner

Withdrawn

John McKenna

Results

Democratic primary results
Party		Candidate	Votes	%
	Democratic	Mary Brannon	25,736	34.4
	Democratic	Fred Gipson	22,744	30.4
	Democratic	Mallory Varner	13,938	18.6
	Democratic	Roxann Klutts	12,482	16.7
Total votes			74,900	100.0

Runoff results

Democratic primary runoff results
Party		Candidate	Votes	%
	Democratic	Mary Brannon	15,245	57.5
	Democratic	Fred Gipson	11,264	42.5
Total votes			26,509	100.0

General election

Polling

Poll source	Date(s) administered	Sample size	Margin of error	Tom Cole (R)	Mary Brannon (D)	Rudy Peters (I)	Undecided
SoonerPoll^[26]	September 15–25, 2018	291	± 5.74%	58%	25%	6%	11%

Predictions

Source	Ranking	As of
The Cook Political Report^[14]	Safe R	November 5, 2018
Inside Elections^[15]	Safe R	November 5, 2018
Sabato's Crystal Ball^[16]	Safe R	November 5, 2018
RCP^[17]	Safe R	November 5, 2018
Daily Kos^[18]	Safe R	November 5, 2018
538^[19]	Safe R	November 7, 2018
CNN^[20]	Safe R	October 31, 2018
Politico^[21]	Safe R	November 2, 2018

Results

Oklahoma's 4th congressional district, 2018
Party		Candidate	Votes	%
	Republican	Tom Cole (incumbent)	149,227	63.1
	Democratic	Mary Brannon	78,088	33.0
	Independent	Ruby Peters	9,323	3.9
Total votes			236,638	100.0
	Republican hold

District 5

2018 Oklahoma's 5th congressional district election

← 2016

2020 →


Nominee	Kendra Horn	Steve Russell
Party	Democratic	Republican
Popular vote	121,149	117,811
Percentage	50.7%	49.3%

Precinct and county-level results
Horn:      50–60%      60–70%      70–80%      80–90%      ≥90%
Russell:      50–60%      60–70%      70–80%      ≥90%
     No votes

U.S. Representative before election

Steve Russell
Republican

Elected U.S. Representative

Kendra Horn
Democratic

The 5th district is located in Central Oklahoma and centered around the state capital, Oklahoma City, and the surrounding areas such as Edmond and Shawnee. Incumbent Republican Steve Russell, who had represented the district since 2015, ran for re-election. He was re-elected with 57% of the vote in 2016. The district had a PVI of R+10. Democrat Kendra Horn won by a margin of 1.4% in what was considered an upset.

Republican primary

Candidates

Nominee

Steve Russell, incumbent U.S. Representative

Eliminated in primary

Gregory Dunson
DeJuan Edwards

Results

Republican primary results
Party		Candidate	Votes	%
	Republican	Steve Russell (incumbent)	65,982	83.6
	Republican	Gregory Dunson	7,638	9.7
	Republican	DeJuan Edwards	5,284	6.7
Total votes			78,904	100.0

Democratic primary

Candidates

Nominee

Kendra Horn, attorney and communication technology firm strategic consultant^[27]

Eliminated in primary

Elysabeth Britt, human resources professional
Tom Guild, former tenured professor at the University of Central Oklahoma, nominee for the seat in 2010 & 2012 and candidate for this seat in 2014 & 2016
Leona Kelley-Leonard, chair of the Seminole County Democratic Party and candidate for this seat in 2014 & 2016
Tyson Meade, singer and songwriter
Eddie Porter, retired state planner for the Oklahoma Department of Human Services

Declined

Al McAffrey, state senator and nominee for this seat in 2014 & 2016

Results

Democratic primary results
Party		Candidate	Votes	%
	Democratic	Kendra Horn	34,857	43.8
	Democratic	Tom Guild	14,242	17.9
	Democratic	Elysabeth Britt	10,739	13.5
	Democratic	Eddie Porter	8,447	10.6
	Democratic	Leona Kelley-Leonard	6,693	8.4
	Democratic	Tyson Meade	4,527	5.7
Total votes			79,505	100.0

Runoff results

Democratic primary runoff results
Party		Candidate	Votes	%
	Democratic	Kendra Horn	22,052	75.8
	Democratic	Tom Guild	7,039	24.2
Total votes			29,091	100.0

General election

Polling

Poll source	Date(s) administered	Sample size	Margin of error	Steve Russell (R)	Kendra Horn (D)	Undecided
SoonerPoll^[28]	October 29, 2018	440	± 4.66%	49%	37%	14%
VCreek/AMG (R-Russell)^[29]	October 14–15, 2018	974	± 3.14%	51%	35%	14%
VCreek/AMG (R-Russell)^[30]	September 24–25, 2018	1,407	± 2.61%	50%	37%	13%
SoonerPoll^[26]	September 15–25, 2018	303	± 5.63%	47%	37%	16%
VCreek/AMG (R-Russell)^[31]	September 4–6, 2018	1,182	± 2.85%	49%	35%	16%

Predictions

Source	Ranking	As of
The Cook Political Report^[14]	Likely R	November 5, 2018
Inside Elections^[15]	Safe R	November 5, 2018
Sabato's Crystal Ball^[16]	Likely R	November 5, 2018
RCP^[17]	Likely R	November 5, 2018
Daily Kos^[18]	Likely R	November 5, 2018
538^[19]	Likely R	November 7, 2018
CNN^[20]	Safe R	October 31, 2018
Politico^[21]	Likely R	November 2, 2018

Results

Oklahoma's 5th congressional district, 2018^[32]
Party		Candidate	Votes	%
	Democratic	Kendra Horn	121,149	50.7
	Republican	Steve Russell (incumbent)	117,811	49.3
Total votes			238,960	100.0
	Democratic gain from Republican

References

^ "Oklahoma Elections — 2018". Oklahoma State Election Board. The State of Oklahoma. Retrieved August 20, 2018.
^ Johnson, Cheryl L. (February 28, 2019). "Statistics of the Congressional Election of November 6, 2018". Clerk of the U.S. House of Representatives. Retrieved April 27, 2019.
^ Krehbiel, Randy (November 10, 2015). "Congressman Jim Bridenstine says third term would be his last". Tulsa World. Retrieved November 22, 2016.
^ Davenport, Christian (November 11, 2016). "GOP congressman being considered for NASA administrator in Trump administration". The Washington Post. Retrieved November 22, 2016.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Casteel, Chris (October 17, 2016). "After ho-hum year for state political contests, 2018 will be 'transformational'". The Oklahoman. Retrieved November 4, 2016.
^ Thompson, Nathan (October 18, 2016). "Oklahoma AG Pruitt not considering run for Congress". Bartlesville Examiner-Enterprise. Retrieved November 4, 2016.
^ "Please Vote Tomorrow for Nathan Dahm for U.S. House of Representatives!". nrapvf.org. NRA-PVF. June 25, 2018. Archived from the original on August 4, 2023. Retrieved August 4, 2023. The NRA Political Victory Fund (NRA-PVF) has endorsed Nathan Dahm for U.S. House of Representatives in the June 26, 2018
^ Jamison Faught (June 18, 2018). "Republican Liberty Caucus Endorses Nathan Dahm". muskogeepolitico.com. Muskogee Politico. Retrieved August 3, 2023.
^ Jamison Faught (May 2, 2018). "Hern endorsed by Republican Main Street Partnership". muskogeepolitico.com. Muskogee Politico. Retrieved August 3, 2023.
^ SoonerPoll
^ "TIM". Retrieved September 12, 2018.^{[permanent dead link‍]}
^ "Amanda Douglas is the latest candidate for Native Vote18 in Oklahoma - IndianCountryToday.com". Retrieved September 12, 2018.
^ SoonerPoll
^ ^a ^b ^c ^d ^e "2018 House Race Ratings". Cook Political Report. Retrieved October 30, 2018.
^ ^a ^b ^c ^d ^e "2018 House Ratings". The Rothenberg Political Report. Retrieved November 5, 2018.
^ ^a ^b ^c ^d ^e "2018 House". Sabato's Crystal Ball. Retrieved November 5, 2018.
^ ^a ^b ^c ^d ^e "Battle for the House 2018". RCP. Retrieved November 5, 2018.
^ ^a ^b ^c ^d ^e "Daily Kos Elections 2018 race ratings". Daily Kos. Retrieved November 5, 2018.^{[permanent dead link‍]}
^ ^a ^b ^c ^d ^e Silver, Nate (August 16, 2018). "2018 House Forecast". FiveThirtyEight. Retrieved November 6, 2018.
^ ^a ^b ^c ^d ^e "CNN's 2018 Race Ratings". cnn.com. Turner Broadcasting System. Archived from the original on October 31, 2018. Retrieved July 30, 2023.
^ ^a ^b ^c ^d ^e "Who wins 2018? Predictions for Every House & Senate Election". POLITICO. Retrieved September 7, 2018.
^ Casteel, Chris (March 30, 2016). "Oklahoma Congressman Mullin may reassess term limits pledge". The Oklahoman. Retrieved November 22, 2016.
^ "JACKSON, JARRIN DALE - Candidate overview - FEC.gov". FEC.gov. Retrieved September 12, 2018.
^ "Coburn will work to oust Mullin after congressman breaks term limit pledge". July 8, 2017. Retrieved September 12, 2018.
^ SoonerPoll
^ ^a ^b ^c SoonerPoll
^ McGuigan, Patrick B. "At Oklahoma City event, Kendra Horn launches campaign for Democratic nomination in the Fifth Congressional District". Capitol Beat OK. Archived from the original on April 8, 2020. Retrieved August 6, 2018.
^ SoonerPoll
^ VCreek/AMG (R-Russell)
^ VCreek/AMG (R-Russell)
^ VCreek/AMG (R-Russell)
^ "Official Results - General Election — November 6, 2018" (PDF). Oklahoma Secretary of State. November 6, 2018. Retrieved October 15, 2019.

External links

Official campaign websites for first district candidates

Tim Gilpin (D) for Congress Archived 2018-05-02 at the Wayback Machine
Kevin Hern (R) for Congress

Official campaign websites for second district candidates

Markwayne Mullin (R) for Congress
Jason Nichols (D) for Congress Archived September 7, 2017, at the Wayback Machine

Official campaign websites for third district candidates

Official campaign websites for fourth district candidates

Official campaign websites for fifth district candidates

Steve Russell (R) for Congress
Kendra Horn (D) for Congress Archived 2019-12-02 at the Wayback Machine

[1] "Oklahoma Elections — 2018". Oklahoma State Election Board. The State of Oklahoma. Retrieved August 20, 2018.

[clerk2018-2] Johnson, Cheryl L. (February 28, 2019). "Statistics of the Congressional Election of November 6, 2018". Clerk of the U.S. House of Representatives. Retrieved April 27, 2019.

[3] Krehbiel, Randy (November 10, 2015). "Congressman Jim Bridenstine says third term would be his last". Tulsa World. Retrieved November 22, 2016.

[4] Davenport, Christian (November 11, 2016). "GOP congressman being considered for NASA administrator in Trump administration". The Washington Post. Retrieved November 22, 2016.

[ho-hum-5] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Casteel, Chris (October 17, 2016). "After ho-hum year for state political contests, 2018 will be 'transformational'". The Oklahoman. Retrieved November 4, 2016.

[6] Thompson, Nathan (October 18, 2016). "Oklahoma AG Pruitt not considering run for Congress". Bartlesville Examiner-Enterprise. Retrieved November 4, 2016.

[7] "Please Vote Tomorrow for Nathan Dahm for U.S. House of Representatives!". nrapvf.org. NRA-PVF. June 25, 2018. Archived from the original on August 4, 2023. Retrieved August 4, 2023. The NRA Political Victory Fund (NRA-PVF) has endorsed Nathan Dahm for U.S. House of Representatives in the June 26, 2018

[8] Jamison Faught (June 18, 2018). "Republican Liberty Caucus Endorses Nathan Dahm". muskogeepolitico.com. Muskogee Politico. Retrieved August 3, 2023.

[9] Jamison Faught (May 2, 2018). "Hern endorsed by Republican Main Street Partnership". muskogeepolitico.com. Muskogee Politico. Retrieved August 3, 2023.

[10] SoonerPoll

[11] "TIM". Retrieved September 12, 2018.^{[permanent dead link‍]}

[12] "Amanda Douglas is the latest candidate for Native Vote18 in Oklahoma - IndianCountryToday.com". Retrieved September 12, 2018.

[13] SoonerPoll

[Cook-14] "2018 House Race Ratings". Cook Political Report. Retrieved October 30, 2018.

[IE-15] "2018 House Ratings". The Rothenberg Political Report. Retrieved November 5, 2018.

[Sab-16] "2018 House". Sabato's Crystal Ball. Retrieved November 5, 2018.

[RCP-17] "Battle for the House 2018". RCP. Retrieved November 5, 2018.

[Kos-18] "Daily Kos Elections 2018 race ratings". Daily Kos. Retrieved November 5, 2018.^{[permanent dead link‍]}

[F538-19] Silver, Nate (August 16, 2018). "2018 House Forecast". FiveThirtyEight. Retrieved November 6, 2018.

[CNN-20] "CNN's 2018 Race Ratings". cnn.com. Turner Broadcasting System. Archived from the original on October 31, 2018. Retrieved July 30, 2023.

[RatingsAndPredictions-21] "Who wins 2018? Predictions for Every House & Senate Election". POLITICO. Retrieved September 7, 2018.

[22] Casteel, Chris (March 30, 2016). "Oklahoma Congressman Mullin may reassess term limits pledge". The Oklahoman. Retrieved November 22, 2016.

[23] "JACKSON, JARRIN DALE - Candidate overview - FEC.gov". FEC.gov. Retrieved September 12, 2018.

[24] "Coburn will work to oust Mullin after congressman breaks term limit pledge". July 8, 2017. Retrieved September 12, 2018.

[25] SoonerPoll

[SoonerPoll-26] SoonerPoll

[27] McGuigan, Patrick B. "At Oklahoma City event, Kendra Horn launches campaign for Democratic nomination in the Fifth Congressional District". Capitol Beat OK. Archived from the original on April 8, 2020. Retrieved August 6, 2018.

[28] SoonerPoll

[29] VCreek/AMG (R-Russell)

[30] VCreek/AMG (R-Russell)

[31] VCreek/AMG (R-Russell)

[election18-32] "Official Results - General Election — November 6, 2018" (PDF). Oklahoma Secretary of State. November 6, 2018. Retrieved October 15, 2019.

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v t e (2017 ←) 2018 United States elections (→ 2019)
U.S. Senate	Arizona California Connecticut Delaware Florida Hawaii Indiana Maine Maryland Massachusetts Michigan Minnesota Minnesota (special) Mississippi Mississippi (special) Missouri Montana Nebraska Nevada New Jersey New Mexico New York North Dakota Ohio Pennsylvania Rhode Island Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming
U.S. House (election ratings)	Alabama Alaska American Samoa Arizona 8th sp Arkansas California 10th 21st 39th Colorado Connecticut Delaware District of Columbia Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan 13th sp Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York 14th 25th sp North Carolina 9th North Dakota Northern Mariana Islands Ohio 12th sp Oklahoma Oregon Pennsylvania 7th and 15th sp 18th sp Rhode Island South Carolina South Dakota Tennessee Texas 27th sp Utah Vermont Virginia 10th U.S. Virgin Islands Washington West Virginia Wisconsin Wyoming
Governors	Alabama Alaska Arizona Arkansas California Lt. Gov Colorado Connecticut Florida Georgia Lt. Gov Guam Hawaii Idaho Illinois Iowa Kansas Maine Maryland Massachusetts Michigan Minnesota Nebraska Nevada New Hampshire New Mexico New York Northern Mariana Islands Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas U.S. Virgin Islands Vermont Wisconsin Wyoming
Attorneys general	Alabama Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Guam Idaho Illinois Iowa Kansas Maryland Massachusetts Michigan Minnesota Nevada New Mexico New York North Dakota Ohio Oklahoma Rhode Island South Carolina South Dakota Texas Vermont Wisconsin
State legislatures	Alabama House Senate Alaska House Senate Arizona House Senate California Assembly Senate Colorado House Senate Connecticut House Senate Delaware House Senate Florida House Senate Georgia House Senate Hawaii House Senate Illinois House Senate Indiana Senate Iowa House Senate Kentucky House Senate Maine House Senate Maryland House Senate Massachusetts Senate Michigan House Senate Minnesota House Montana House Senate Nebraska Nevada Senate New Hampshire House Senate New Mexico House New York Assembly Senate North Carolina House Senate Ohio House Senate Oregon Pennsylvania House Senate South Carolina House Texas House Senate Utah House Senate Vermont House Senate Washington House Senate West Virginia Senate Wisconsin Assembly Senate Wyoming House Senate
Mayors	Alexandria, VA Anaheim, CA Anchorage, AK Auburn, AL Austin, TX Burlington, VT Chula Vista, CA Fairfax, VA Fort Lauderdale, FL Franklin, VA Irvine, CA Laredo, TX Lexington, KY Little Rock, AR Long Beach, CA Louisville, KY Lubbock, TX Nashville, TN (special) Newark, NJ Newport News, VA Oakland, CA Oklahoma City, OK Phoenix, AZ (special) Providence, RI Radford, VA Reno, NV San Bernardino, CA San Francisco, CA (special) San Jose, CA Santa Ana, CA Tallahassee, FL Virginia Beach, VA (special) Washington, DC
Local	Anchorage, AK Cook County, IL Cuyahoga County, OH Executive Council El Paso, TX El Paso County, CO Los Angeles County, CA Orange County, CA San Diego, CA San Francisco, CA
Statewide	Alabama Alaska American Samoa Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Northern Mariana Islands Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas U.S. Virgin Islands Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming
Related	Russian interference in the 2018 United States elections