Kaylee Peterson
DEMOCRATIC
Artisan Jeweler
Idaho1st District2026 HOUSE FORECAST
Russ Fulcher*
REPUBLICAN
US House of Representatives (R-ID)
2019 – Present
2026 Idaho 1st District House Forecast:
Proprietary forecast for Idaho's 1st congressional district House election between Democrat Kaylee Peterson and Republican Russ Fulcher. This page will update with a daily set of 100,000 new simulations as race fundamentals change in order to produce race odds, projected margin, and forecasted vote share. This page also includes polling averages when available.
The 2026 Idaho 1st District House election features Democrat Kaylee Peterson and Republican Russ Fulcher. Incumbent Representative Russ Fulcher is seeking reelection to a fifth term. In 2024, Donald Trump won Idaho's 1st congressional district by 22.5%, and the election for the district's House seat is rated as solid Republican in 2026.
- Year
- 2026
- Race
- House
- District
- ID-1
- Democratic candidate
- Kaylee Peterson
- Republican candidate
- Russ Fulcher
- Incumbent / open seat
- Russ Fulcher
- Forecast rating
- Solid R
- Projected vote
- 29.8% D / 70.2% R
- Projected margin
- R +40.4
- Forecast odds
- 0.1% D / 99.9% R
- Forecast last updated
- 12:00 AM on July 2, 2026
- Polling average
- —
- Polling average margin
- —
- Polling last updated
- —
- Polls included
- 0
- Latest poll
- —