HOUSE
Colorado CO-01 House2026
RACE AT A GLANCE
RACE TYPE
OPEN
Diana DeGette (D)
Lost Primary
COOK PARTISAN VOTING INDEX
Last updated : Nov 17, 2025D +50
R +50
D +29
Race summary
A 29-year-old democratic socialist has ousted a 68-year-old congresswoman who was first elected to Congress before her rival was born.Key Dates
Filing Deadline: Mar 17, 2026
Primary Election: Jun 30, 2026
INCUMBENT
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INCUMBENT
Full Bio:
DeGETTE, Diana, a Representative from Colorado; born in Tachikawa, Japan, July 29,
1957; graduated from South High School, Denver, Colo., 1975; B.A., Colorado
College, Colorado Springs, Colo., 1979; J.D., New York University, New York,
N.Y., 1982; member of the Colorado state house of representatives, 1992-1996;
elected as a Democrat to the One Hundred Fifth and to the ten succeeding
Congresses (January 3, 1997-present).
Source: Bioguide
CANDIDATES
Democrats
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Republicans
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DISTRICT DATA
Colorado - 01
Denver
Population Breakdown
Source: 2020 Census (VAP) for 2026
Past Presidential Results from this District
2024 Election Results
Source: Dave Leip
2020 Election Results
Source: Dave's Redistricting/VEST
RACE ANALYSIS
Race Analysis
Updated: Jul 1, 2026
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