Colorado — 1978 U.S. Senate election
Recent presidential results
Akashicstate1978 Senate electionColorado · U.S. SenateArmstrongR+18.4
How it voted
Share of the 1978 vote
| William L. Armstrong ✓Republican | 58.7% | 480,801 |
|---|---|---|
| Floyd K. HaskellDemocrat | 40.3% | 330,148 |
| Vedder V. DronUnited States Party | 0.7% | 5,789 |
1978Senate margin
D+60R+60
63 counties, each filled by 1978 D-vs-R margin. Hover any county for its result.
County-level results (63 counties) — table
| County | Winner | Margin |
|---|---|---|
| ADAMS, CO | Republican | R+7.3 |
| ALAMOSA, CO | Republican | R+13.3 |
| ARAPAHOE, CO | Republican | R+41.3 |
| ARCHULETA, CO | Republican | R+14.3 |
| BACA, CO | Republican | R+18.5 |
| BENT, CO | Republican | R+11.9 |
| BOULDER, CO | Republican | R+7.8 |
| CHAFFEE, CO | Republican | R+8.6 |
| CHEYENNE, CO | Republican | R+24.2 |
| CLEAR CREEK, CO | Republican | R+17.0 |
| CONEJOS, CO | Democratic | D+1.1 |
| COSTILLA, CO | Democratic | D+40.6 |
| CROWLEY, CO | Republican | R+28.6 |
| CUSTER, CO | Republican | R+36.6 |
| DELTA, CO | Republican | R+26.6 |
| DENVER, CO | Democratic | D+2.7 |
| DOLORES, CO | Republican | R+20.8 |
| DOUGLAS, CO | Republican | R+51.1 |
| EAGLE, CO | Republican | R+17.6 |
| EL PASO, CO | Republican | R+37.6 |
| ELBERT, CO | Republican | R+37.2 |
| FREMONT, CO | Republican | R+21.7 |
| GARFIELD, CO | Republican | R+17.3 |
| GILPIN, CO | Democratic | D+8.2 |
| GRAND, CO | Republican | R+35.5 |
| GUNNISON, CO | Republican | R+19.7 |
| HINSDALE, CO | Republican | R+40.5 |
| HUERFANO, CO | Democratic | D+12.8 |
| JACKSON, CO | Republican | R+29.1 |
| JEFFERSON, CO | Republican | R+32.2 |
| KIOWA, CO | Republican | R+16.7 |
| KIT CARSON, CO | Republican | R+35.6 |
| LA PLATA, CO | Republican | R+26.0 |
| LAKE, CO | Democratic | D+3.3 |
| LARIMER, CO | Republican | R+23.0 |
| LAS ANIMAS, CO | Democratic | D+22.1 |
| LINCOLN, CO | Republican | R+36.7 |
| LOGAN, CO | Republican | R+36.7 |
| MESA, CO | Republican | R+31.7 |
| MINERAL, CO | Republican | R+24.6 |
| MOFFAT, CO | Republican | R+28.4 |
| MONTEZUMA, CO | Republican | R+23.5 |
| MONTROSE, CO | Republican | R+26.2 |
| MORGAN, CO | Republican | R+29.2 |
| OTERO, CO | Republican | R+18.6 |
| OURAY, CO | Republican | R+36.4 |
| PARK, CO | Republican | R+21.4 |
| PHILLIPS, CO | Republican | R+29.2 |
| PITKIN, CO | Democratic | D+4.9 |
| PROWERS, CO | Republican | R+12.6 |
| PUEBLO, CO | Democratic | D+6.2 |
| RIO BLANCO, CO | Republican | R+30.0 |
| RIO GRANDE, CO | Republican | R+33.8 |
| ROUTT, CO | Republican | R+9.7 |
| SAGUACHE, CO | Republican | R+9.6 |
| SAN JUAN, CO | Republican | R+10.8 |
| SAN MIGUEL, CO | Democratic | D+12.7 |
| SEDGWICK, CO | Republican | R+30.9 |
| SUMMIT, CO | Republican | R+22.8 |
| TELLER, CO | Republican | R+28.4 |
| WASHINGTON, CO | Republican | R+40.8 |
| WELD, CO | Republican | R+19.6 |
| YUMA, CO | Republican | R+35.1 |
presidential baselinePresident 1976R+11.5Senate 1978R+18.4vs. baselineR+6.9
Colorado's 1978 Senate race ran 6.9 points more Republican than its 1976 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, 1978CO
Source. MIT Election Data + Science Lab — 1978 US Senate returns, party-classified by literal ballot party · county returns aggregated from precinct-level results. Real returns — nothing estimated.