1974 United States Senate election in Colorado

1974 United States Senate election in Colorado

November 5, 1974

Nominee Gary Hart Peter Dominick Party Democratic Republican Popular vote 471,691 325,508 Percentage 57.23% 39.50%

County results Hart:      40–50%      50–60%      60–70% Dominick:      40-50%      50–60%      60–70%

U.S. senator before election Peter Dominick Republican Elected U.S. Senator Gary Hart Democratic

The 1974 United States Senate election in Colorado took place on November 5, 1974. Incumbent Republican U.S. Senator Peter Dominick ran for re-election to a third term in office, but was defeated by Democrat Gary Hart. As of 2024, this is the last time that an incumbent Senator from Colorado lost re-election for this seat, and the last time that El Paso County voted for the Democratic candidate in a Senate election.

Democratic primary

Candidates

• Gary Hart, campaign manager for George McGovern in 1972
• Marty Miller, Arapahoe County District Attorney
• Herrick Roth, former State Senator from Denver

Results

Democratic primary results

Party		Candidate	Votes	%
	Democratic	Gary Hart	81,161	39.92%
	Democratic	Herrick Roth	66,819	32.86%
	Democratic	Marty Miller	55,339	27.22%
Total votes			203,319	100.00%

General election

Results

1974 United States Senate election in Colorado

Party		Candidate	Votes	%	±%
	Democratic	Gary Hart	471,691	57.23%	15.78
	Republican	Peter Dominick (incumbent)	325,508	39.50%	19.05
	Independent	John M. King	16,131	1.96%	N/A
	Prohibition	Joseph Fred Hyskell	8,410	1.02%	1.02
	Independent	Henry John Olshaw	2,395	0.29%	N/A
	Independent	Jack Marsh (write-in)	31	0.00%	N/A
Total votes			824,166	100.00%
	Democratic gain from Republican		Swing

See also

• 1974 United States Senate elections