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1980 Colorado U.S. Senate Election

Colorado · 4 candidates · See every 1980 U.S. Senate race

Who won the 1980 Colorado U.S. Senate Election?

Gary Hart won the 1980 Colorado U.S. Senate Election. Gary Hart received 590,501 popular votes (50.33%). The main challenger was Mary Estill Buchanan (48.7%).

See the full head-to-head between Hart and Buchanan

Hart +1.6 pts · won by 19,206 votes
Gary HartDemocraticWINNER50.33%
590,501 votes
Mary Estill BuchananRepublican48.7%
571,295 votes
Earl HiggersonStatesman0.62%
7,265 votes
Henry John OlshawUnaffiliated-American0.35%
4,081 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.