The California governor's race has been one of the most volatile political contests of the 2026 cycle, and nowhere is that volatility more visible than on Polymarket and other top prediction market apps.
The market has undergone a dramatic reversal, but how did we get here, and what does the crowd's money actually tell us?
Use the Polymarket referral code ACTION to unlock a trading bonus: Deposit $20, Get $50 Bonus!
The Current State of the California Governor's Race
To understand the current odds, you have to understand the event that initially reshaped the contest: the abrupt exit of Representative Eric Swalwell. He had spent months as a frontrunner, accumulating major endorsements from the SEIU and the California Teachers Association. Then, in April 2026, sexual misconduct allegations from a former staffer ended his campaign overnight.
The immediate beneficiary was Tom Steyer, who entered the race in November 2025 as a self-funding late entry, shooting from around 14% to a peak near 69%, powered by nearly $116 million in advertising spend, roughly three-quarters of all candidate spending combined. But the market has since swung hard toward former U.S. Attorney General Xavier Becerra, who is currently in the lead.
Here's how the market looks today:
Becerra's rise is striking, given that Steyer still commands the largest single-candidate volume over $3 million — meaning plenty of traders who bought in at higher prices are now sitting on losing positions. The market is actively repricing who the Democratic frontrunner really is.
What Polls Say & Where They Diverge
The Becerra surge is worth examining against the polling backdrop. A post-Swalwell Emerson College poll from April actually foreshadowed this shift, as it found Democrats nearly evenly split between Steyer at 20%, and a surging Becerra at 19%, with Porter at 15%.
On the Republican side, Hilton led at 17% with Bianco at 14%. A full 23% of likely primary voters remained undecided.
In other words, polling had already signaled that Steyer's Polymarket dominance was fragile, and traders appear to have caught up. The gap between markets and polls has now narrowed considerably, with Becerra's 51% market probability aligning more closely with his polling trajectory than Steyer's earlier 69% ever did.
California's jungle primary adds another wrinkle: the top two finishers advance regardless of party. The real drama may happen before November, as Democrats are anxious to avoid a two-Republican top-two finish in the June 2 primary that would guarantee a GOP governor in the nation's largest blue state. A related Polymarket market on whether one candidate from each party advances currently sits at 71%.
How to Read These Odds
A few caveats before treating the numbers as gospel. Prediction markets aggregate information quickly; the platform cites a one-month accuracy score of 94%, but critics note they can be skewed by wealthy individual traders and momentum effects.
Most importantly, market prices reflect investor sentiment, not actual votes. Turnout dynamics and ground game strength, factors that shape California's hard-to-predict electorate, don't show up neatly in any contract price. The wild swings in this market from Swalwell to Steyer to Becerra are a reminder of how quickly sentiment can shift.
The Bottom Line
With Gavin Newsom term-limited, California is electing its first new governor in eight years. Right now, the market's money has moved decisively toward Xavier Becerra. But given that this race has already cycled through multiple "frontrunners," anyone treating 51% as a sure thing may be underestimating just how much can still change before November.
Use the Polymarket referral code ACTION to unlock a trading bonus: Deposit $20, Get $50 Bonus!
