List of United States Senators from Colorado

U.S. Senate; Delegations by State
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This page displays current and historical information pertaining to the U.S. Senate delegation from Colorado.

Current members

The current members of the U.S. Senate from Colorado are:

Office	Name	Party	Date assumed office	Date term ends
U.S. Senate Colorado	Michael Bennet	Democratic	January 22, 2009	January 3, 2029
U.S. Senate Colorado	John Hickenlooper	Democratic	January 3, 2021	January 3, 2027

Election history

For more information on the different classes of U.S. Senators, please see: Classes of United States Senators

Class II

Senators in Class II were elected to office in the November 2020 general election, unless they took their seat through appointment or special election. Class II terms run from the beginning of the 117th Congress on January 3, 2021, to the end of the 119th Congress on January 3, 2027.

2020

General election

General election for U.S. Senate Colorado

The following candidates ran in the general election for U.S. Senate Colorado on November 3, 2020.

	Candidate	%	Votes
✔	John Hickenlooper (D)	53.5	1,731,114
	Cory Gardner (R)	44.2	1,429,492
	Raymon Doane (L)	1.7	56,262
	Daniel Doyle (Approval Voting Party)	0.3	9,820
	Stephan Evans (Unity Party)	0.3	8,971
	Bruce Lohmiller (G) (Write-in)	0.0	0
	Danny Skelly (Independent) (Write-in)	0.0	0
	Michael Sanchez (Independent) (Write-in)	0.0	0

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 3,235,659
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Withdrawn or disqualified candidates

Gary Swing (Other)
Joseph Camp (Independent)
Veronique Bellamy (Socialist Party)
Martha Wolf (Independent)

Democratic primary election

Democratic primary for U.S. Senate Colorado

John Hickenlooper defeated Andrew Romanoff in the Democratic primary for U.S. Senate Colorado on June 30, 2020.

	Candidate	%	Votes
✔	John Hickenlooper	58.7	585,826
	Andrew Romanoff	41.3	412,955

	There were no incumbents in this race. The results have been certified. Source	Total votes: 998,781
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Withdrawn or disqualified candidates

Republican primary election

Republican primary for U.S. Senate Colorado

Incumbent Cory Gardner advanced from the Republican primary for U.S. Senate Colorado on June 30, 2020.

		Candidate	%	Votes
✔		Cory Gardner	100.0	554,806

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 554,806
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Withdrawn or disqualified candidates

Margot Dupre (R)

Libertarian primary election

Libertarian primary for U.S. Senate Colorado

Raymon Doane defeated Gaylon Kent in the Libertarian primary for U.S. Senate Colorado on June 30, 2020.

	Candidate	%	Votes
✔	Raymon Doane	62.8	4,365
	Gaylon Kent	37.2	2,583

	There were no incumbents in this race. The results have been certified. Source	Total votes: 6,948
= candidate completed the Ballotpedia Candidate Connection survey.
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Unity Party convention

Unity Party convention for U.S. Senate Colorado

Stephan Evans defeated Joshua Rodriguez in the Unity Party convention for U.S. Senate Colorado on April 4, 2020.

		Candidate
✔		Stephan Evans (Unity Party)
		Joshua Rodriguez (Unity Party)

	There were no incumbents in this race. The results have been certified. Source
= candidate completed the Ballotpedia Candidate Connection survey.
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2014

On November 4, 2014, Cory Gardner won election to the United States Senate. He defeated incumbent Mark Udall (D), Gaylon Kent (L), Steve Shogan (I), Raul Acosta (I) and Bill Hammons (Unity Party of Colorado) in the general election.

**U.S. Senate, Colorado General Election, 2014**
Party		Candidate	Vote %	Votes
	Republican	Cory Gardner	48.2%	983,891
	Democratic	Mark Udall Incumbent	46.3%	944,203
	Libertarian	Gaylon Kent	2.6%	52,876
	Independent	Steve Shogan	1.4%	29,472
	Independent	Raul Acosta	1.2%	24,151
	Unity Party of Colorado	Bill Hammons	0.3%	6,427
Total Votes				2,041,020
Source: Colorado Secretary of State

2008

On November 4, 2008, Mark Udall won election to the United States Senate. He defeated Bob Schaffer (R), Douglas Campbell (American Constitution), Bob Kinsey (G) and three write-in candidates in the general election.^[1]

U.S. Senate, Colorado General Election, 2008
Party		Candidate	Vote %	Votes
	Democratic	Mark Udall	52.8%	1,230,994
	Republican	Bob Schaffer	42.5%	990,755
	American Constitution	Douglas Campbell	2.6%	59,733
	Green	Bob Kinsey	2.1%	50,004
	Write-in	Buddy Moore	0%	116
	Write-in	Gary Cooper	0%	10
	Write-in	Bruce Lohmiller	0%	9
Total Votes				2,331,621

2002

On November 5, 2002, Wayne Allard won re-election to the United States Senate. He defeated Tom Strickland (D), Douglas Campbell (American Constitution), Rick Stanley (L), John Heckman (Concerns of People) and Gary Cooper (Write-in) in the general election.^[2]

U.S. Senate, Colorado General Election, 2002
Party		Candidate	Vote %	Votes
	Republican	Wayne Allard incumbent	50.7%	717,893
	Democratic	Tom Strickland	45.8%	648,130
	American Constitution	Douglas Campbell	1.5%	21,547
	Libertarian	Rick Stanley	1.5%	20,776
	Concerns of People	John Heckman	0.5%	7,140
	Write-in	Gary Cooper	0%	596
Total Votes				1,416,082

Class III

Senators in Class III were elected to office in the November 2022 general election, unless they took their seat through appointment or special election. Class III terms run from the beginning of the 118th Congress on January 3, 2023, to the end of the 120th Congress on January 3, 2029.

2022

See also: United States Senate election in Colorado, 2022