Idaho 1st — House 2026 Rep Primary
The Idaho 1st — House rep primary is scheduled for May 19, 2026. The model makes Russ Fulcher the heavy favorite at 94%, with Andy Briner at 3% in a 3-candidate field. Russ Fulcher is the incumbent, leads the field in reported fundraising, and has the most tracked endorsements. No public polling is available for this race, so the forecast leans on fundraising, endorsements, candidate profiles, and historical results.
Current win probabilities
- Russ Fulcher (incumbent) — 94%
- Andy Briner — 3%
- Joseph Morrison — 3%
Probabilities update daily from polls, fundraising, endorsements, and historical results.