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Live prediction market odds for Idaho Senate winner?. Compare prices across Kalshi and Polymarket and PredictIt.

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Idaho Senate winner?

2026-11-03

Best price · tap to trade

Jim Risch (R)93¢1.08xKalshiDavid Roth (D)0¢Kalshi

About This Market

Traders give Jim Risch (R) about a 93.4% chance. David Roth (D) follows at 0.2%. Compare prices from Kalshi, Polymarket, and PredictIt. The largest cross-platform price difference is 2.4 percentage points.

Traders give Jim Risch (R) about a 93.4% chance. David Roth (D) follows at 0.2%. Compare prices from Kalshi, Polymarket, and PredictIt. The largest cross-platform price difference is 2.4 percentage points.

Polymarket and Kalshi are tracking the Idaho Senate winner for the upcoming 2026 election. This race is crucial as it could influence the balance of power in the Senate and reflect voter sentiment on key issues in the state.

Price History

Multi-Platform Probabilities
Loading 30D data…

Live Markets

3 platforms
OutcomeConsensus
KalshiKalshi
PolymarketPolymarket
PredictItPredictIt
Best price
JR
Jim Risch (R)
93%
Kalshi93¢
Polymarket96¢
PredictIt97¢
Kalshi1.08x93¢
PlatformImplied %Yes bid / askNo bid / ask
KalshiKalshi
92.6%92¢93¢7¢8¢
PolymarketPolymarket
94.2%94¢96¢4¢6¢
PredictItPredictIt
95.0%94¢97¢3¢6¢
DR
David Roth (D)
single venue
—
—
—
Kalshi250.00x0¢
PlatformImplied %Yes bid / askNo bid / ask
KalshiKalshi
—0¢—100¢100¢
KalshiKalshiPolymarketPolymarketPredictItPredictIt

Best price among US-regulated venues.

Candidate Spotlight

About Jim Risch (R)

Jim Risch is the current U.S. Senator from Idaho, serving his third term. He previously served as Idaho's Governor and Lieutenant Governor. As Chairman of the Senate Foreign Relations Committee, he plays a key role in shaping U.S. foreign policy.

Smart Trade Router

$
¢

Resolution Oracles

KalshiKalshi
United States Congress
Read Full Market Rulebooks
Stats
Spread2.4%
Platforms3
Candidates2
Leader

Jim Risch (R)

93.4% avg

Market RulebooksOfficial settlement criteria and edge cases

Market Rulebook: Idaho Senate winner?

Official settlement criteria, resolution sources, and edge cases across Kalshi.

KalshiKalshi
Primary Rule

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.

Resolution Oracles
United States Congress

Frequently Asked Questions

When is the Idaho Senate election?

The Idaho Senate election is scheduled for November 3, 2026. This timing aligns with the general election cycle in the United States.

What factors influence the odds for the Idaho Senate winner?

Factors influencing the odds include candidate popularity, campaign funding, and prevailing political issues in Idaho. Polling data and voter turnout predictions also play a significant role.

How do prediction markets work for political events like this?

Prediction markets allow participants to buy and sell shares based on their predictions of outcomes. Prices reflect the collective beliefs about the likelihood of various candidates winning.

What does the Idaho Senate winner prediction market track?

The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket, PredictIt in one place. Each price reflects the market’s implied probability, not a guaranteed result.

What are the latest Idaho Senate winner odds?

The latest available prices are Jim Risch (R): 92.6¢ on Kalshi, 94.2¢ on Polymarket, 95.0¢ on PredictIt; David Roth (D): 0.3¢ on Kalshi, 0.1¢ on Polymarket. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity.

Learn more:How to Read Prediction Market PricesCompare Fees Before You TradeNew to Polymarket?

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Prediction HuntPrediction.com coverage

Republican Idaho Senate Odds Drop 30pp to 67% Despite Risch's 40-Point Poll LeadNo identifiable catalyst explains the selloff. Risch leads Roth 55%-15% in June polling, and every forecaster rates Idaho Solid R.Jul 20, 2026Idaho Senate Republican Odds Fall 31 Points to 66% on Independent BidTodd Achilles' independent run has repriced what was a 97% Republican lock, targeting moderate GOP defectors and Idaho's 25% unaffiliated electorate.Jul 18, 2026Idaho Senate Republican Odds Collapse 30 Points to 66% Without CatalystKalshi and PredictIt hold Republican odds above 95% while Polymarket sits at 6%, suggesting platform illiquidity rather than a genuine consensus shift.Jul 10, 2026Idaho Senate: Republican Odds Collapse 31 Points to 65% With No CatalystMarkets now give a 35% chance a non-Republican wins Idaho's Senate seat, despite the state voting R+18 or higher in every Senate race since 1990.Jul 4, 2026