Colorado — 2010 U.S. Senate election
Akashicstate2010 Senate electionColorado · U.S. SenateBennetD+1.7
How it voted
Share of the 2010 vote
| Michael F. Bennet ✓Democrat | 48.1% | 851,590 |
|---|---|---|
| Ken BuckRepublican | 46.4% | 822,731 |
| Bob KinseyGreen | 2.2% | 38,768 |
2010Senate margin
D+60R+60
64 counties, each filled by 2010 D-vs-R margin. Hover any county for its result.
County-level results (64 counties) — table
| County | Winner | Margin |
|---|---|---|
| ADAMS, CO | Democratic | D+7.3 |
| ALAMOSA, CO | Democratic | D+13.8 |
| ARAPAHOE, CO | Democratic | D+4.2 |
| ARCHULETA, CO | Republican | R+17.9 |
| BACA, CO | Republican | R+36.3 |
| BENT, CO | Republican | R+10.0 |
| BOULDER, CO | Democratic | D+39.0 |
| BROOMFIELD, CO | Democratic | D+2.9 |
| CHAFFEE, CO | Democratic | D+0.5 |
| CHEYENNE, CO | Republican | R+54.0 |
| CLEAR CREEK, CO | Democratic | D+11.2 |
| CONEJOS, CO | Democratic | D+10.2 |
| COSTILLA, CO | Democratic | D+45.3 |
| CROWLEY, CO | Republican | R+18.7 |
| CUSTER, CO | Republican | R+34.0 |
| DELTA, CO | Republican | R+31.5 |
| DENVER, CO | Democratic | D+47.2 |
| DOLORES, CO | Republican | R+24.5 |
| DOUGLAS, CO | Republican | R+25.0 |
| EAGLE, CO | Democratic | D+11.8 |
| EL PASO, CO | Republican | R+26.1 |
| ELBERT, CO | Republican | R+45.4 |
| FREMONT, CO | Republican | R+26.1 |
| GARFIELD, CO | Republican | R+2.0 |
| GILPIN, CO | Democratic | D+9.7 |
| GRAND, CO | Republican | R+7.1 |
| GUNNISON, CO | Democratic | D+16.9 |
| HINSDALE, CO | Republican | R+15.5 |
| HUERFANO, CO | Democratic | D+11.2 |
| JACKSON, CO | Republican | R+29.5 |
| JEFFERSON, CO | Democratic | D+2.4 |
| KIOWA, CO | Republican | R+46.4 |
| KIT CARSON, CO | Republican | R+43.3 |
| LA PLATA, CO | Democratic | D+5.0 |
| LAKE, CO | Democratic | D+19.3 |
| LARIMER, CO | Democratic | D+2.0 |
| LAS ANIMAS, CO | Democratic | D+10.2 |
| LINCOLN, CO | Republican | R+40.8 |
| LOGAN, CO | Republican | R+28.2 |
| MESA, CO | Republican | R+28.3 |
| MINERAL, CO | Republican | R+4.0 |
| MOFFAT, CO | Republican | R+43.4 |
| MONTEZUMA, CO | Republican | R+24.0 |
| MONTROSE, CO | Republican | R+33.4 |
| MORGAN, CO | Republican | R+23.3 |
| OTERO, CO | Republican | R+10.2 |
| OURAY, CO | Democratic | D+5.0 |
| PARK, CO | Republican | R+16.5 |
| PHILLIPS, CO | Republican | R+37.2 |
| PITKIN, CO | Democratic | D+42.9 |
| PROWERS, CO | Republican | R+29.5 |
| PUEBLO, CO | Democratic | D+12.6 |
| RIO BLANCO, CO | Republican | R+55.4 |
| RIO GRANDE, CO | Republican | R+9.5 |
| ROUTT, CO | Democratic | D+16.9 |
| SAGUACHE, CO | Democratic | D+22.9 |
| SAN JUAN, CO | Democratic | D+12.8 |
| SAN MIGUEL, CO | Democratic | D+43.1 |
| SEDGWICK, CO | Republican | R+18.0 |
| SUMMIT, CO | Democratic | D+21.2 |
| TELLER, CO | Republican | R+33.4 |
| WASHINGTON, CO | Republican | R+51.4 |
| WELD, CO | Republican | R+20.3 |
| YUMA, CO | Republican | R+41.9 |
presidential baselinePresident 2008D+9.0Senate 2010D+1.6vs. baselineR+7.3
Colorado's 2010 Senate race ran 7.3 points more Republican than its 2008 presidential margin.
Colorado's Senate margins
Every comparable D–R 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% |
Same ballot, 2010CO
Source. MIT Election Data + Science Lab — 2010 US Senate returns, party-classified by literal ballot party · county returns aggregated from precinct-level results. Real returns — nothing estimated.