It’s Primary Election Day in California on June 2. Or Election Week, as they call it in California, as the state has quite the reputation for multi-day, slow voter counts. Results of closer contests are rarely resolved in the first several hours, let alone 24 hours.
Traders on Kalshi and Polymarket have poured millions into contracts tied to California’s high-stakes races, creating a real-time snapshot of crowd wisdom on voter sentiment as the June 2 primary approaches. An on-the-defensive incumbent, Karen Bass, defends her Los Angeles mayoral position while a wide-open contest to succeed an outgoing Gavin Newsom draws intense focus.
The release of public opinion polls almost daily, along with perceived campaign stumbles or high points, continues to move the needle up and down on major candidates. Traders must also factor in California’s universal mail-in ballot process, in which all registered voters receive ballots four weeks before the election. Therefore, a large number of votes have been locked in well before Election Day and are not subject to being changed regardless of any breaking news.
LA Mayor Race Sees Tightening Odds for Incumbent Karen Bass
Karen Bass currently trades as the clear favorite on major platforms like Kalshi, holding around 62% implied probability in winner-take-all contracts. Spencer Pratt sits at 27%, with Nithya Raman at 11%. Volume on these markets has exceeded $35 million.
The Los Angeles mayoral election process is an odd duck. The Primary serves as the General, unless no candidate reaches the 50%+1 threshold majority of all votes cast. Then the General Election in November becomes the run-off race between the top two vote-getters in the Primary. But if any candidate does reach the majority threshold on June 2, there is no run-off, and the title of next Mayor of Los Angeles is conferred on the spot.
This impacts “next Mayor” probabilities, as the first step will likely be a winnowing to two candidates for a run-off, thereby resetting the probabilities in a now two-candidate-only race. Obviously, all other candidates will drop to zero in this same ongoing market. These contingent events make calculations for the ultimate winner that much more complex.
The Probabilities Still Favor a 2-Candidate Runoff in November.
Even so, the market consensus is that Bass, the favorite, will not win outright on June 2, and that she and Spencer Pratt are the two most likely finalists for the November runoff, a race in which she will once again be the favorite from the outset.
However, the novelty of the Pratt candidacy and campaign, like nothing Los Angeles has ever seen before, leads to a large amount of uncertainty as it relates to standard L.A. election probabilities. Add to that the rather intense and high-profile failures of the Bass Administration that have fanned resentment across the city, and what would’ve typically been a lock for re-election appears to be anything but.
Currently in third place, City Councilperson Nithya Raman remains the Democratic Socialist Party candidate in Los Angeles, with fairly fervent, committed backing. She had expected this race to be between Bass and herself, likely, but the addition of Pratt as the “alternate to the incumbent” to the race set her back quite a bit in terms of odds. Yet, she’s clearly going to be a material vote-getter in the June 2 election.
There are no candidates beyond these three who are considered even mildly viable to advance on June 2.
Key Candidates and Current Market Probabilities for LA Mayor
| Candidate | Implied Probability | Recent Volume Contribution |
|---|---|---|
| Karen Bass | 62% | Leading share of $35M+ |
| Spencer Pratt | 27% | Strong retail trader interest |
| Nithya Raman | 11% | Progressive consolidation |
Governor Successor Markets Favor Xavier Becerra as Primary Looms
Xavier Becerra dominates markets for California’s next governor on platforms such as Polymarket, commanding a 69-75% probability of winning the seat. Traders assign him a 90%+ chance of advancing from the June 2 “top two vote-getters” primary, indicating strong Democratic consolidation.
Steve Hilton and Tom Steyer trail in overall winner markets, as they need to secure at least a 2nd place on June 2nd to advance to the General Election in November. Becerra’s polling gains, labor endorsements, and name recognition in the state from a career in political office roles have driven this surge. Also, Becerra is the lone Hispanic candidate in the nation’s second-most-Hispanic state (only New Mexico has a higher percentage of Hispanic population).
Markets now favor Hilton over Steyer for the second spot in the runoff, though all three candidates — Becerra, Hilton, and Steyer are grouped in the top tier for chances to be in the Top 2 runoff. So any combination among these three men remains reasonably probable.
Current Trader Probabilities for California Governor Key Outcomes
| Outcome | Implied Probability | Trading Volume |
|---|---|---|
| Becerra Wins General Election | 69% | $29M+ |
| Becerra Advances from Primary | 91% | $931K |
| Becerra First in Primary | 82% | $207K |
| Dem-Rep Advance Pair | 75% | $128K |
Broader Implications for the California Political Landscape
Combined volume across these races tops $70 million, highlighting deep engagement across Kalshi’s election markets.
Current markets show a strong favoritism toward an incumbent re-election, even if Bass’ polling numbers and approval ratings are not high. Ousting an incumbent is always an uphill battle, especially when the alternative options are two new mayoral candidates. Though the Pratt candidacy is truly a novel outlier in historical data, past models may not be entirely appropriate.
The Governor’s race is shaping up to be Becerra versus Hilton, or Becerra versus Steyer, though the former remains the current market favorite for a runoff. If that holds out, Becerra, as the Democrat, is likely to retain his commanding lead over Republican Hilton in the November elections; a Republican hasn’t won a statewide office in California in two decades (or an exact reverse of Texas).
References
- Kalshi LA Mayor Winner Market
- Polymarket California Governor Predictions
- CNBC on Spencer Pratt Campaign
- Wikipedia 2026 California Gubernatorial Election
- Ballotpedia LA Mayoral Election
- LA Mayoral Debate YouTube
- Becerra Poll Surge YouTube
- Kalshi Elections Category
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