CO-01 House Election Winner
$22.9K Vol.Closes Nov 3, 2026
Democratic Party$9K Vol.94%
Republican Party$13.8K Vol.6%
The Democratic Party nominee Melat Kiros will face Republican Valdamar Archuleta in the November 3, 2026 general election for Colorado's 1st Congressional District seat.
The candidates are Democratic Socialist Melat Kiros (Democratic nominee) and Valdamar Archuleta (Republican nominee), with Kiros replacing long-time incumbent Diana DeGette.
CO-01 encompasses almost all of Denver and is a heavily Democratic district that DeGette held with 76.6% of the vote in 2024 and 80.3% in 2020.
BallotpediaWikipediaThe seat remains a Democratic stronghold, so the election outcome hinges primarily on voter turnout and whether Archuleta can capitalize on disillusionment with the party's establishment rather than on a partisan swing.
coloradosun.comeconomicmemos.comNote: While the district is heavily Democratic, the 2026 primary upset demonstrates that incumbency is not a guarantee, and the ultimate result will depend on Kiros's ability to unify the party base against Archuleta.
Democratic Socialist Melat Kiros defeated incumbent Rep. Diana DeGette by 6 percentage points in the CO-01 Democratic primary, with the Associated Press calling the race at 10:03 p.m.
coloradosun.comdeepsyte.appKiros, a 29-year-old democratic socialist, secured the nomination as Denver voters rejected Colorado's longest-serving member of Congress in favor of youth and change.
coloradosun.comThe Federal Election Commission lists four active Democratic candidates for the 2026 race, but Kiros has already won the primary, leaving her as the sole Democratic nominee for the general election.
whatdistrictamiin.comFinal month of general election campaigning including voter registration deadlines and potential late-primary runoff announcements if any undetermined races exist.
whatdistrictamiin.comGeneral election day when voters in CO-01 cast ballots to determine the next U.S. House representative.
whatdistrictamiin.comdeepsyte.appAI-generated briefing. AI can make mistakes. This is not financial advice.
CO-01 is a deeply Democratic district with a 29-point Democratic lean (D+29), making it historically resistant to Republican wins.
economicmemos.comIncumbent Diana DeGette previously won with 76.6% of the vote in 2024, indicating strong underlying Democratic support in the district despite the primary upset.
WikipediaMelat Kiros has already secured the Democratic nomination with 53.2% of the primary vote, capitalizing on a movement for youth and change that energized Denver voters.
Wikipediacoloradosun.comAI-generated briefing. AI can make mistakes. This is not financial advice.
Kiros's victory came in a closely watched primary where she defeated a nearly three-decade incumbent, suggesting potential internal Democratic factionalism that could affect general election cohesion.
coloradosun.comwashingtonexaminer.comThe primary was competitive with DeGette receiving 44.2% of the vote, indicating nearly half of Democratic primary voters may be less committed to Kiros than to the incumbent.
deepsyte.appDemocratic Socialist candidates sometimes face challenges in broader general elections if moderate voters perceive them as too extreme, though this risk is mitigated in a D+29 district.
AI-generated briefing. AI can make mistakes. This is not financial advice.