Colorado 1st district 2026
Election day is November 3, 2026. One of 8 House seats in Colorado.
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About this race
The 2026 Colorado's 1st congressional district election will be held on November 3, 2026, to elect a member of the United States House of Representatives to represent Colorado's 1st congressional district.
Primary elections were held on June 30, 2026. Democratic socialist and former attorney Melat Kiros won the Democratic nomination over incumbent Diana DeGette, who had held the seat since 1996. Christy Peterson was unopposed in the Republican nomination.
A Republican has not held Colorado's 1st congressional district seat since 1973.