Riding profile

CO-1

US House district — CO · Mixed · us co

The question

CO-1: a safe seat for the Democrats?

Editorial read

CO-1, a mixed riding in CO, elected a member with the Democrats in the previous cycle, with a 55-point margin. The Vote-Scope model projects the Democrats ahead at 80% vote share, against 20% for the Republicans, and the probability of a close race is negligible.

Sitting member

DEGETTE, DIANA L

Sits with Democrat

Primary race

Who leads in the primary

Democrat

Melat Kiros 41%

3 candidates polled · Latest poll Jun 15, 2026 · bydata_for_progress

Who's running

The candidates

Declared and on-ballot candidates for the upcoming election.

  • Democrat Incumbent

    Degette, Diana L

  • Democrat Challenger

    James, Wanda

  • Democrat Challenger

    Kiros, Melat

  • Democrat Challenger

    Palomino, Santiago Emmanuel

Current forecast

Democrat

Safe

Probability
100%
Mean margin (pts)
60.7
P(close race)
0%

Projected vote share

Projection by party

  • Democrat 80.3%
  • Republican 19.7%

In context

How this riding stacks up

Democrat Republican Other
HereCO-1 80.3%19.7%0.0%
National averageUnited States 51.9% +28.5 46.6% −27.0 5.4% −5.4

Nationwide averages computed across the 435 riding-level projections (unweighted mean).

Projection track

How the projection has moved

Previous election · US HOUSE_2024

Won by
Democrat
Margin
55.0 pts
Margin shift vs current projection
+5.7 pts

Around the region

Nearby ridings

Tone only — pick a riding to see the numbers.

Last model run
Cycle
us_house_2026