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Live prediction market odds for CA-03 primary: Who will advance?. Compare prices across Kalshi and Polymarket and PredictIt.

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CA-03 primary: Who will advance?

2026-06-02

Best price · tap to trade

Robb Tucker94¢1.06xKalshiAmi Bera99¢1.01xKalshiLaura Koscki5¢20.00xKalshi
Compare all 8 outcomes across 3 venues

About This Market

Traders give Robb Tucker about a 85.0% chance. Ami Bera follows at 51.6%, Laura Koscki follows at 48.7%, and Heidi Hall follows at 12.8%. Compare prices from Kalshi, Polymarket, and PredictIt. The largest cross-platform price difference is 92.2 percentage points.

Traders give Robb Tucker about a 85.0% chance. Ami Bera follows at 51.6%, Laura Koscki follows at 48.7%, and Heidi Hall follows at 12.8%. Compare prices from Kalshi, Polymarket, and PredictIt. The largest cross-platform price difference is 92.2 percentage points.

Prediction markets on Polymarket, Kalshi, and PredictIt are tracking the CA-03 primary to determine which candidates will advance. This primary is crucial as it shapes the electoral landscape for the upcoming general election, influencing party dynamics and voter engagement in the region.

Price History

Multi-Platform Probabilities
Loading 30D data…

Live Markets

3 platforms
OutcomeConsensus
KalshiKalshi
PolymarketPolymarket
PredictItPredictIt
Best price
RT
Robb Tucker
85%
Kalshi94¢
Polymarket88¢
PredictIt98¢
Kalshi1.07x94¢
PlatformImplied %Yes bid / askNo bid / ask
KalshiKalshi
89.0%86¢94¢6¢14¢
PolymarketPolymarket
81.0%77¢88¢12¢23¢
PredictItPredictIt
50.0%2¢98¢2¢98¢
AB
Ami BeraARB
52%
Kalshi99¢
Polymarket10¢
PredictIt99¢
Kalshi1.01x99¢
PlatformImplied %Yes bid / askNo bid / ask
KalshiKalshi
97.7%92¢99¢1¢8¢
PolymarketPolymarket
5.5%1¢10¢90¢99¢
PredictItPredictIt
50.0%4¢99¢1¢96¢
LK
Laura KosckiARB
49%
Kalshi5¢
Polymarket96¢
—
Kalshi20.83x5¢
PlatformImplied %Yes bid / askNo bid / ask
KalshiKalshi
2.9%1¢5¢95¢99¢
PolymarketPolymarket
94.5%93¢96¢4¢7¢
HH
Heidi Hall
13%
Kalshi11¢
Polymarket19¢
—
Kalshi9.09x11¢
PlatformImplied %Yes bid / askNo bid / ask
KalshiKalshi
10.0%4¢11¢89¢97¢
PolymarketPolymarket
15.5%12¢19¢81¢88¢
CB
Christopher Bennett
12%
Kalshi13¢
Polymarket18¢
—
Kalshi7.69x13¢
PlatformImplied %Yes bid / askNo bid / ask
KalshiKalshi
13.0%6¢13¢87¢94¢
PolymarketPolymarket
10.6%3¢18¢82¢97¢
KalshiKalshiPolymarketPolymarketPredictItPredictIt

Best price among US-regulated venues.

Candidate Spotlight

About Robb Tucker

Robb Tucker is the current Nevada County Supervisor for District 2, serving a term that extends until December 31, 2028. Before his election in 2024, he was the President and CEO of Forest Springs Mobilehome Community, a family-owned business he led until its sale in 2020. His leadership in local government and business underscores his commitment to public service and community development.

About Ami Bera

Ami Bera is the U.S. Representative for California's 6th Congressional District, serving since 2013. He previously represented the 7th District from 2013 to 2023. Bera is the longest-serving Indian American in Congress and has a background in medicine, having served as Sacramento County's Chief Medical Officer.

About Heidi Hall

Heidi Hall is the District 1 Supervisor for Nevada County, California, serving a term that began in January 2025. She has been a member of the Nevada County Board of Supervisors since 2017, with her current term running through December 31, 2028. Hall has a background in environmental policy, having worked as a Senior Policy Analyst for the U.S. Environmental Protection Agency and as a Manager at the California Department of Water Resources.

About Christine Bish

Christine Bish is a Republican candidate for the U.S. House of Representatives in California's 3rd congressional district. She previously ran for Congress in California's 6th district, where she participated in a debate against incumbent Ami Bera. Bish is recognized for her advocacy on issues such as energy independence, border security, and affordability in California.

Smart Trade Router

$
¢

Resolution Oracles

KalshiKalshi
Kalshi Rules
Read Full Market Rulebooks
Stats
Spread92.2%
Platforms3
Candidates8
Leader

Robb Tucker

85.0% avg

Market RulebooksOfficial settlement criteria and edge cases

Market Rulebook: CA-03 primary: Who will advance?

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

KalshiKalshi
Primary Rule

If Ami Bera advances in the 2026 CA-03 primary, then the market resolves to Yes.

Edge Cases

This market is eligible for accelerated determination after a consensus of media organizations project the advancing candidates. See full rules for details.

Resolution Oracles
Kalshi Rules

Frequently Asked Questions

What is the significance of the CA-03 primary?

The CA-03 primary plays a vital role in determining which candidates will represent their parties in the general election. It can influence voter turnout and party strategies in a key electoral district.

How do prediction markets work for the CA-03 primary?

Prediction markets allow participants to buy and sell shares based on their expectations of which candidates will advance. Prices reflect collective beliefs about candidate viability and potential outcomes.

What factors influence the odds in the CA-03 primary markets?

Odds are influenced by polling data, candidate fundraising, endorsements, and campaign activities. Changes in public sentiment and political events can also significantly impact market prices.

What does the CA-03 primary: Who will advance 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 CA-03 primary: Who will advance odds?

The latest available prices are Robb Tucker: 89.0¢ on Kalshi, 81.0¢ on Polymarket, 50.0¢ on PredictIt; Ami Bera: 97.7¢ on Kalshi, 5.5¢ on Polymarket, 50.0¢ on PredictIt; Laura Koscki: 2.9¢ on Kalshi, 94.5¢ on Polymarket; Heidi Hall: 10.0¢ on Kalshi, 15.5¢ 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

Bera Falls to 51% Chance of Advancing in CA-03 PrimaryTucker's Gallagher and Kiley endorsements consolidated Republican votes, cutting Bera's advance odds 45 points in three days. Election is June 2.May 30, 2026