Wisconsin District 1
Republicans hold this seat today (current holder); Democrats are favored: 54 in 100 that it changes hands.
Mitchell Berman wins in 54 of 100 simulations.
The polling average has Mitchell Berman +0.8 across 2 polls; partisan lean, the national environment and incumbency point to Bryan Steil +0.3. Polls get 61% of the weight 15 days out.
Where the result could land
Every simulated outcome, grouped in 2-point steps. Projected margin Berman +0.3; 80 in 100 fall between Steil +4.3 and Berman +4.9.
The candidates
Bryan George Steil is an American attorney, businessman, and Republican politician from Janesville, Wisconsin. He is a member of the United States House of Representatives, representing Wisconsin's 1st congressional district since 2019. Since 2023, he has served as chair of the House Administration Committee. Wikipedia
Ballot list and short bios from Wikipedia (CC BY-SA); websites from Wikidata; fundraising from the FEC (cycle-to-date, latest report).
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Polls
The polling average stands at Berman +0.8 across 2 polls testing Mitchell Berman against Bryan Steil.
Line: weighted average after adjustments; band: 95% range of the average; dots: individual polls after adjustments.
| Pollster | Dates | Sample | Result | Adjusted | Weight |
|---|---|---|---|---|---|
| Impact ResearchC+ · DEM sponsor for House Majority PAC | Sep 28–Oct 1 | 500 LV | Berman +1.0 | Berman +1.2 | 0.22 |
| DCCC Targeting and Analytics DepartmentC+ · DEM sponsor | Sep 21–Sep 23 | 495 LV | Berman +0.0 | Berman +0.2 | 0.19 |
Chance of winning over time
How this race’s odds have moved as polls and the national environment changed.
Out of 100. Today: Berman 54, Steil 46.
What’s driving the forecast
The model blends each estimate by how much to trust it right now. Polls get 61% of the weight, 15 days out.
| Polling average (after adjustments) | Berman +0.8 | ±4.9 sampling range; effective 2 polls |
| Partisan lean (Cook PVI, 2026 lines) | R+2.0 | roughly 4 points of margin vs. the nation |
| National environment | D+9.6 | generic ballot + presidential approval |
| Incumbent’s track record | Steil +0.8 | In 2024 they ran 1.7 pts more Republican than the state’s lean predicted; half carries over (max 10) |
| Incumbency | Steil +3.6 | incumbent’s side |
| Fundamentals estimate | Steil +0.3 | ±6 typical error |
| Expert ratings (average) | — | used only in the “+ Expert ratings” version |
| Forecast | Berman +0.3 | ±3.5 standard deviation, including 2.3 for movement before Election Day |
All three versions
- Polls only: Mitchell Berman 57 in 100 (Toss-up)
- Polls + fundamentals: Mitchell Berman 54 in 100 (Toss-up)
- Polls + fundamentals + experts: Mitchell Berman 54 in 100 (Toss-up)
Rules and notes
- Incumbent renominated
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