PolitiFinder

2010 Colorado U.S. Senate Election

Colorado · 7 candidates · See every 2010 U.S. Senate race

Who won the 2010 Colorado U.S. Senate Election?

Michael F. Bennet won the 2010 Colorado U.S. Senate Election. Michael F. Bennet received 851,590 popular votes (48.05%). The main challenger was Ken Buck (46.42%).

See the full head-to-head between Bennet and Buck

Bennet +1.6 pts · won by 28,859 votes
Michael F. BennetDemocraticWINNER48.05%
851,590 votes
Ken BuckRepublican46.42%
822,731 votes
Bob KinseyGreen2.19%
38,768 votes
MacLyn Mac StringerLibertarian1.27%
22,589 votes
Jason NapolitanoIndependent Reform1.1%
19,415 votes
Charley MillerUnaffiliated0.64%
11,330 votes
J. MoromisatoUnaffiliated0.33%
5,767 votes
Popular-vote totals for U.S. Senate elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.