Colorado's 1st Congressional District, 2026
Open seatMelat Kiros (D) vs. Christy Peterson (R): Colorado's 1st District election is on Tuesday, November 3, 2026, part of the 2026 midterm elections.
- Seat held by
- (D) Diana DeGette, since 1997
- Election day
- Tuesday, Nov. 3, 2026
- Term
- Jan 3, 2027 – Jan 3, 2029
Who is running for Colorado's 1st Congressional District?
Melat Kiros (D) vs. Christy Peterson (R)
- Melat Kiros, Democratic FEC filing ↗
- Christy Peterson, Republican FEC filing ↗
Who is replacing Diana DeGette?
Diana DeGette (D) lost the primary. Source ↗
The winner takes the seat on January 3, 2027.
Who holds this seat now?
(D) Diana DeGette, since 1997
When is the election?
Tuesday, Nov. 3, 2026
This race is for Colorado's 1st Congressional District (CO-1, District 1). Find your district on the district map.
Candidate list: civicAPI ↗