Idaho Senate Race Odds 2026
Prices as of 2026-11-03 22:50 UTC.
Jim RischR leads at 97% across 4 venues: Kalshi 97%, Polymarket US 97%, PredictIt 97%, Polymarket 97%. Todd AchillesI is at 3%.
Final prices before polls closed
Frozen at 2026-11-03 22:47 UTC. The result is entered when the race is called and scored on the results ledger.
- Kalshi Jim Risch 97%
- Polymarket US Jim Risch 97%
- PredictIt Jim Risch 97%
- Polymarket Jim Risch 97%
Candidates and prices
| Candidate | Kalshi | Polymarket US | PredictIt | Polymarket | Consensus |
|---|---|---|---|---|---|
| Jim RischR incumbent Senator since 2009, seeking a fourth term; won primary with 67.3% | 97% bid 97¢ · ask 97¢ · OI $404k | 97% ask 98¢ | 97% buy 97¢ | 97% vol $287k | 97% |
| Todd AchillesI Former Democratic state representative (16th district, 2024-2025) running as an independent; backed by the Forward Party and AFGE | 3% bid 3¢ · ask 4¢ · OI $444k | 2% ask 3¢ | 5% buy 6¢ | 2% vol $172k | 3% |
| Matt LoesbyL Libertarian nominee; ran for ID-1 in 2024 | — | — | — | — | — |
Where to trade this race
Every book we know that takes this race, with the price it shows for Jim Risch. The brokers trade Kalshi's contract at Kalshi's price. Partner books pay us a referral fee; the order is paying books first, which never changes a price.
Each book checks age and location at sign-up. How the sites compare.
The race
The forecasters' consensus rating is Solid R, favouring the Republican. The markets' consensus has Jim RischR at 97%. What a price means.
How the Kalshi market resolves
If a representative of the Republican party is sworn in as a Senator of Idaho for the term beginning in 2027, then the market resolves to Yes.
Related races
- Idaho Governor: Brad LittleR at 98%
- Iowa Senate: Josh TurekD at 50%
- Kansas Senate: Adam HamiltonD at 66%
- Alaska Senate: Mary PeltolaD at 69%
- Maine Senate: Troy JacksonD at 69%
- South Carolina Senate: Darline GrahamR at 70%