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County results Wirth: 40–50% 50–60% 60–70% | |||||||||||||||||
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| Elections in Colorado |
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The 1986 United States Senate election in Colorado was held on November 4, 1986. Incumbent Democratic U.S. Senator Gary Hart decided to vacate his Senate seat instead of seeking a third term ahead of another presidential run which he would announce right after leaving the Senate. Democratic nominee Tim Wirth won the open seat by a narrow margin, keeping it in Democrat hands for another six years.
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Tim Wirth | 529,449 | 49.91% | −0.42% | |
| Republican | Ken Kramer | 512,994 | 48.36% | −0.34% | |
| Independent | Michael Martin Bush | 11,127 | 1.05% | ||
| Socialist Workers | Michael R. Chamberlain | 3,756 | 0.35% | ||
| Independent American | Henry John Olshaw | 1,868 | 0.18% | −0.17% | |
| Prohibition | Calvin G. Dodge | 1,571 | 0.15% | ||
| Majority | 16,455 | 1.55% | −0.09% | ||
| Turnout | 1,060,765 | ||||
| Democratic hold | Swing | ||||