Idaho 1st District
Currently held by a Republican · incumbent running
- Projected margin
- R+42.6
- 80% range
- R+54.1 to R+31.0
- Partisan lean
- R+44.1
- Uncertainty multiplier
- 1.80×
The 80% range comes from 200,000 simulations in which this race’s error is correlated with every other race through the national, state and demographic layers.
- Polling average
- no polls
- Fundamentals
- R+42.3
- Blended
- R+42.3
- Similar-race shift
- +2.2
No public polling of this matchup. The forecast rests on fundamentals plus the polling residuals of demographically and politically similar races — which is the normal case: most of the 435 House seats are never polled.
- Partisan lean
- R+44.1
- Elasticity
- 1.06
- Incumbency
- −3.4
- Candidate experience
- 0.0
- Fundraising
- −1.5
- National environment
- D+7.1
- Expected margin
- R+44.5
- 2024 margin
- R+46.2
- 2020 margin
- R+39.3
- Shift 2020 → 2024
- R+6.9
- Votes cast, 2024
- 482,396
Presidential results reaggregated onto the 2026 district lines. This is where the seat’s partisan lean comes from, and it carries most of the forecast in a race nobody has polled.
- Population
- 692,128
- Median age
- 49.7
- Median household income
- $72,000
- Bachelor’s degree or higher
- 28%
- White
- 83%
- Black
- 1%
- Hispanic
- 10%
- Asian
- 2%
Used to find demographically similar districts, so a race with no polling can borrow the polling error of races that look like it.
| Candidate | Party | Raised | Cash on hand |
|---|---|---|---|
| Russell Fulcher | REP | $663k | $245k |
| Kaylee Jade Peterson | DEM | $181k | $15k |
Receipts across the cycle, from FEC bulk filings. The model uses the ratio between the two sides rather than either total, and weights it lightly — money follows a competitive race at least as much as it causes one.