DemocraticIncumbent
Brittany Pettersen
Incumbent U.S. Representative
- Experience
- Statewide office or Congress
- Raised
- $2.2M
- From individuals
- $1M
- Spent
- $1.6M
- Cash on hand
- $1.2M
Money: FEC, through Sep 30, 2026.
Colorado › U.S. House of Representatives · November 3, 2026 · Updated Oct 16, 2026
Colorado's 7th District
Pettersen is very likely to win: Pettersen wins in more than 99 of every 100 simulations.
Pettersen (D)
>99%
chance of winning
Bennett (R)
<1%
- Average margin
- D+24.9
- 80% of outcomes
- D+16 to D+34
- Partisan lean
- D+15
- Polls
- No pollsmodel only
Pettersen is very likely to win: Pettersen wins in 49 of every 50 simulations.
Pettersen (D)
98%
chance of winning
Bennett (R)
2%
- Average margin
- D+20.7
- 80% of outcomes
- D+9 to D+32
- Partisan lean
- D+15
- Polls
- No pollsmodel only
Range of outcomes
Final margin across our simulations; the white dashes mark the middle 80%.
The candidates
Republican
Tim Bennett
U.S. Army veteran
- Experience
- No elected office
- Raised
- $102.1K
- From individuals
- $60.5K
- Spent
- $90.4K
- Cash on hand
- $11.7K
Money: FEC, through Sep 30, 2026.
What goes into the forecast
Every ingredient's estimate of the final margin.
- National environment
- D+9.5Election Day forecast; federal races run in it
- Swing reaching this office
- 78%Of a shift in the environment, from past House races since 2016
- Mountain West adjustment
- +1.5How House races in the region have run against lean and environment lately
Each estimate is a margin before national and statewide uncertainty is simulated. Horizon blends polls, fundamentals and a little of the similar-places estimate, weighting each by how precise it is; Pulse uses polls and similar places only.
Fundamentals inputs
| Incumbency (+1 D, −1 R) | 1 |
| Fundraising edge (log ratio of individual money) | 1.55 |
| Elected-experience edge | 1 |
| First-term incumbent | 0 |
| Seat's last result vs. expectation | 2.07 |
| Incumbent's last result vs. expectation | 2.07 |
Polls
No public polls of this race. The forecast relies on fundamentals and on polling of similar places.
The district
Lean D+15: how much more Democratic or Republican than the nation it votes for president.
Presidential vote
Precinct results re-aggregated to the current district lines.
Who lives here
- Population
- 727,004
- People per km²
- 39
- Adults with a B.A.+
- 50%
- White, no degree
- 37%of adults
- White 75%
- Hispanic 16%
- Black 1%
- Asian 3%
- Other / multiracial 5%
American Community Survey 2020–2024, aggregated from census tracts.
Past results
Results in the same-numbered district; earlier elections may have used different lines.
2024
425,966 votes · D+14.7✓ Brittany Pettersen (D)55.3%
Sergei Matveyuk (R)41.1%
Patrick Bohan (L)2.3%
Ron Tupa (OTH)1.2%
2024 President Vote in this district
433,135 two-party votes · D+15.4 · D+16.9 vs. the nation✓ Kamala Harris (D)57.7%
Donald Trump (R)42.3%
2022
363,601 votes · D+15.3✓ Brittany Pettersen (D)56.4%
Erik Aadland (R)41.4%
Ross Klopf (L)1.7%
Critter Milton (OTH)0.5%
2020 Earlier district lines
423,724 votes · D+22.3✓ Ed Perlmutter (D)59.1%
Charles "casper" Stockham (R)37.6%
Ken Biles (L)2.7%
David Olszta (OTH)0.6%
2020 President Vote in this district
447,019 two-party votes · D+14.6 · D+10.0 vs. the nation✓ Joe Biden (D)57.3%
Donald Trump (R)42.7%
2018 Earlier district lines
338,067 votes · D+26.1✓ Ed Perlmutter (D)60.4%
Mark Barrington (R)35.4%
Jennifer Nackerud (L)4.1%
2016 Earlier district lines
362,010 votes · D+16.2✓ Ed Perlmutter (D)55.2%
George Athanasopoulos (R)39.8%
Martin L Buchanan (L)5.0%
2016 President Vote in this district
359,374 two-party votes · D+3.2 · D+1.0 vs. the nation✓ Hillary Clinton (D)51.6%
Donald Trump (R)48.4%
Also on the ballot in Colorado
Neighboring districts
CO-1Melat KirosChristy Peterson>99%Dem.>99%Dem. CO-2Joe NeguseKelley Dennison>99%Dem.>99%Dem. CO-3Dwayne RomeroJeff Hurd71%Rep.71%Rep. CO-4Eileen LaubacherLauren Boebert84%Rep.95%Rep. CO-5Jessica KillinJeff Crank66%Rep.71%Rep. CO-6Jason CrowJason Clark>99%Dem.>99%Dem. CO-8Manny RutinelGabe EvansD flipD flip89%Dem.85%Dem.