Elections / 2010 · Senate · CO
The Democratic candidate won Colorado's Senate seat D+1.6.
Colorado, 2010. Candidate results and statewide totals below.
Colorado — 2010 Senate result
Source: MIT Election Data + Science Lab, 1976–2024 Senate returns (party-classified by literal ballot party).
Democratic (D)
851,590
48.1%
Republican (R)
822,731
46.4%
All others
97,869
5.5%
Margin
D+1.6
Candidates
Statewide candidate totals — MIT Election Data + Science Lab, 2010 Senate returns.
| Candidate | Party | Votes | Share |
|---|---|---|---|
| Michael F. Bennet | DDemocrat | 851,590 | 48.1% |
| Ken Buck | RRepublican | 822,731 | 46.4% |
| Bob Kinsey | OGreen | 38,768 | 2.2% |
| Maclyn "Mac" Stringer | OLibertarian | 22,589 | 1.3% |
| Jason Napolitano | OIndependent Reform | 19,415 | 1.1% |
| Charley Miller | OUnaffiliated | 11,330 | 0.6% |
| J. Moromisato | OUnaffiliated | 5,767 | 0.3% |
Colorado's Senate margins
Every contest in our store, 1978–2022
| Year | Margin (D minus R) |
|---|---|
| 1978 | −18.4% |
| 1980 | +1.6% |
| 1984 | −29.6% |
| 1986 | +1.6% |
| 1990 | −14.0% |
| 1992 | +9.1% |
| 1996 | −5.7% |
| 1998 | −27.5% |
| 2002 | −4.9% |
| 2004 | +4.8% |
| 2008 | +10.3% |
| 2010 | +1.6% |
| 2014 | −1.9% |
| 2016 | +5.7% |
| 2020 | +9.3% |
| 2022 | +14.6% |