# California Governor winner?

In 2026

Updated: April 12, 2026

Category: Elections

Tags: US Elections
Governor

HTML: /markets/elections/us-elections/california-governor-winner/

## Short Answer

**Key takeaway.** The **model** identifies Tom Steyer as the most likely winner of the 2026 California Governor race but assigns him a meaningfully lower **probability** of **39.7%** compared to the **market**'s **52.0%**, indicating a divergence in expectations.

## Key Claims (January 2026)

**- Katie Porter leads all declared Democratic candidates in projected cash on hand.** Eleni Kounalakis ranks second in projected cash on hand among Democrats.
   Chad Bianco consolidated significant Republican and law enforcement endorsements.
   Republican candidates face a substantial uphill battle in heavily Democratic California.
*   The California Labor Federation endorsement was shared among multiple Democrats.

### Why This Matters (GEO)

- AI agents extract claims, not arguments.
- Improves citation probability in summaries and answer cards.
- Enables fact stitching across multiple sources.

## Executive Verdict

**Key takeaway.** **Model**'s **7.3%** for Katie Porter (D) versus **0.1%** **market** implies a 1000x payout due to her leading cash on hand.

### Who Wins and Why

| Outcome | Market | Model | Why |
| --- | --- | --- | --- |
| Eric Swalwell | 0.9% | 0.6% | Eric Swalwell is a declared candidate in a competitive Democratic field. |
| Matt Mahan | 19.0% | 15.1% | Matt Mahan is a declared Republican candidate with significant support among non-Democrats. |
| Chad Bianco | 3.0% | 1.9% | Chad Bianco is a declared Republican candidate for California Governor. |

## Model vs Market

| Outcome | Market Probability | Octagon Model Probability |
| --- | --- | --- |
| Eric Swalwell | 0.9% | 0.6% |
| Matt Mahan | 19.0% | 15.1% |
| Chad Bianco | 3.0% | 1.9% |
| Daniel Mercuri | 0.1% | 0.1% |
| Nicole Shanahan | 0.1% | 0.1% |
| Rob Bonta | 0.1% | 0.1% |
| Ché Ahn | 1.5% | 1.0% |
| Butch Ware | 0.1% | 0.1% |
| Eleni Kounalakis | 0.1% | 7.3% |
| Leo Zacky | 0.1% | 0.1% |
| Tom Steyer | 52.0% | 39.7% |
| Rick Caruso | 0.1% | 0.1% |
| Katie Porter | 17.0% | 17.2% |
| Steve Hilton | 6.2% | 3.9% |
| Stephen Cloobeck | 0.1% | 0.1% |
| Kyle Langford | 0.1% | 0.1% |
| Ethan Agarwal | 0.1% | 0.1% |
| Toni Atkins | 0.1% | 7.3% |
| Alex Padilla | 0.1% | 0.1% |
| Kamala Harris | 0.1% | 0.1% |
| Michael Younger | 0.1% | 0.1% |
| Xavier Becerra | 6.2% | 3.9% |
| Tony Thurmond | 0.2% | 0.1% |
| Antonio Villaraigosa | 1.7% | 1.1% |
| Betty Yee | 0.3% | 0.2% |

- Expiration: November 3, 2027

## Market Behavior & Price Dynamics

Based on the chart data, this market exhibits a sideways trend at an extremely low probability level. The price has been confined to a narrow range between 0.1% and 1.0% since its inception. A notable movement occurred early in the market's history, with the price dropping from its starting point of 1.0% to 0.1% between April 7th and April 12th, 2026. Since this initial drop, the price has remained stable at the low end of its range. The available information provides no specific news or external events to account for this early price decline.

The market has seen significant total volume, with 596,412 contracts traded. However, the price has remained static at its floor for most of its duration, suggesting that this volume is not driving any price discovery or upward momentum. This pattern could indicate that trading activity is primarily focused on buying or selling at the market's lowest possible price level, reflecting a lack of conviction in any potential price increase. The key price levels are clearly defined: resistance is at the 1.0% peak, and strong support has been established at the 0.1% floor, where the price currently sits.

Overall, the price action suggests a strong and stable market consensus. The sentiment is overwhelmingly bearish, with participants consistently assigning a near-zero probability to this outcome. The market's inability to move off its 0.1% floor, despite substantial trading volume, indicates that traders currently view this as a highly improbable event. The sideways movement reflects a lack of new information or changing perspectives that would alter this low probability assessment.

## Contract Snapshot

This market resolves to Yes if Tom Steyer is elected Governor of California in the 2026 election; otherwise, it resolves to No. The outcome will be verified by the California Secretary of State. The market opened on October 13, 2025, and will close early upon the swearing-in of the first governor elected in 2026, or by November 3, 2027, with projected payout 30 minutes after closing.

## Market Discussion

Traders are primarily discussing the 2026 California Governor's race, with Tom Steyer currently favored at 52%. Key arguments revolve around ideological positions, with some advocating for a "full progressive" candidate like Katie Porter (17%) and others positioning Matt Mahan (19%) as a Bay Area moderate choice against perceived "far left" contenders. Discussions also touch on regional support bases and the implications of party endorsements.

## Market Data

| Contract | Yes Bid | Yes Ask | Last Price | Volume | Open Interest |
| --- | --- | --- | --- | --- | --- |
| Alex Padilla | 0% | 0.1% | 0.1% | $543,421 | $233,925.8 |
| Antonio Villaraigosa | 1.7% | 2% | 1.7% | $437,748.99 | $280,006.82 |
| Butch Ware | 0% | 0.1% | 0.1% | $969,949.9 | $301,841 |
| Betty Yee | 0.1% | 0.4% | 0.3% | $400,219.23 | $197,909.95 |
| Ché Ahn | 1.4% | 1.5% | 1.5% | $976,600.66 | $790,091.29 |
| Chad Bianco | 1.2% | 3% | 3% | $1,242,469.01 | $859,865.87 |
| Daniel Mercuri | 0% | 0.1% | 0.1% | $1,129,963 | $314,992 |
| Ethan Agarwal | 0% | 0.1% | 0.1% | $707,971 | $317,144 |
| Eleni Kounalakis | 0% | 0.1% | 0.1% | $952,789.55 | $277,835.45 |
| Eric Swalwell | 0.6% | 1% | 0.9% | $1,866,135.77 | $995,340.8 |
| Kamala Harris | 0% | 0.1% | 0.1% | $516,198.95 | $332,075 |
| Kyle Langford | 0% | 0.1% | 0.1% | $712,359 | $314,927 |
| Katie Porter | 16% | 17% | 17% | $790,147.67 | $562,150.53 |
| Leo Zacky | 0% | 0.1% | 0.1% | $952,260 | $307,330 |
| Matt Mahan | 15% | 19% | 19% | $1,429,086.78 | $819,694.86 |
| Michael Younger | 0% | 0.1% | 0.1% | $479,631 | $161,171 |
| Nicole Shanahan | 0% | 0.1% | 0.1% | $1,010,048 | $348,667 |
| Rob Bonta | 0% | 0.1% | 0.1% | $984,361 | $345,372 |
| Rick Caruso | 0% | 0.1% | 0.1% | $813,953.3 | $391,985 |
| Stephen Cloobeck | 0% | 0.1% | 0.1% | $771,791 | $367,853 |
| Steve Hilton | 5% | 6.1% | 6.2% | $777,970.99 | $613,304.32 |
| Toni Atkins | 0% | 0.1% | 0.1% | $608,895 | $260,812 |
| Tom Steyer | 51% | 52% | 52% | $906,990.1 | $538,402.94 |
| Tony Thurmond | 0.2% | 0.3% | 0.2% | $441,769 | $228,073 |
| Xavier Becerra | 5% | 6% | 6.2% | $446,419.66 | $327,433.84 |

## Who Leads in Cash on Hand for California Governor Candidates?

Katie Porter | $15.5 million (as of June 30, 2025 [[^]](https://staging.eastbaytimes.com/2025/08/01/with-kamala-harris-out-race-for-california-governor-heats-up/)) |
Eleni Kounalakis | $11.2 million (for the period ending June 30, 2025 [[^]](https://staging.eastbaytimes.com/2025/08/01/with-kamala-harris-out-race-for-california-governor-heats-up/)) |
Toni Atkins | $7.8 million (for the period ending June 30, 2025 [[^]](https://staging.eastbaytimes.com/2025/08/01/with-kamala-harris-out-race-for-california-governor-heats-up/)) |

**Congresswoman Katie Porter leads in cash on hand projections**

Congresswoman Katie Porter leads in cash on hand projections. Among the top-tier declared Democratic candidates for California Governor, Congresswoman Katie Porter is projected to report the largest 'cash on hand' figure for the period ending June 30, 2025, with an estimated **$15.5** million [[^]](https://staging.eastbaytimes.com/2025/08/01/with-kamala-harris-out-race-for-california-governor-heats-up/). This figure positions her as the leading fundraiser for the specified period [[^]](https://staging.eastbaytimes.com/2025/08/01/with-kamala-harris-out-race-for-california-governor-heats-up/).

Eleni Kounalakis and Toni Atkins follow Porter in fundraising. Lieutenant Governor Eleni Kounalakis is expected to report **$11.2** million in 'cash on hand' for the same period [[^]](https://staging.eastbaytimes.com/2025/08/01/with-kamala-harris-out-race-for-california-governor-heats-up/). Senate President Pro Tempore Toni Atkins concluded the period with approximately **$7.8** million in 'cash on hand', with one source providing a more precise figure of **$7,825,000** [[^]](https://staging.eastbaytimes.com/2025/08/01/with-kamala-harris-out-race-for-california-governor-heats-up/).

Xavier Becerra's campaign shows slower fundraising compared to peers. Xavier Becerra's campaign is estimated to have approximately **$3.1** million in 'cash on hand' as of June 30, 2025, based on partial filings and public statements [[^]](https://californiaglobe.com/fr/where-fundraising-stands-in-a-post-harris-2026-gubernatorial-race/), indicating a slower start in fundraising compared to his peers.

## Did California Labor Federation Exclusively Endorse One Candidate for Governor?

Endorsement Date | March 14, 2024 [[^]](https://calaborfed.org/press-releases/california-federation-of-labor-unions-endorse-for-governor-and-other-statewide-races-for-2026-primary-election/) |
Number of Candidates Endorsed | Four [[^]](https://calaborfed.org/press-releases/california-federation-of-labor-unions-endorse-for-governor-and-other-statewide-races-for-2026-primary-election/) |
Endorsed Candidates | Rob Bonta, Eleni Kounalakis, Toni Atkins, Katie Porter [[^]](https://calaborfed.org/press-releases/california-federation-of-labor-unions-endorse-for-governor-and-other-statewide-races-for-2026-primary-election/) |

**The California Labor Federation jointly endorsed four gubernatorial candidates**

The California Labor Federation jointly endorsed four gubernatorial candidates. On March 14, 2024, the California Labor Federation, AFL-CIO, made an unprecedented decision by simultaneously endorsing four candidates for the 2026 Primary Election for Governor [[^]](https://calaborfed.org/press-releases/california-federation-of-labor-unions-endorse-for-governor-and-other-statewide-races-for-2026-primary-election/). This means the organization did not exclusively endorse a single candidate first [[^]](https://calaborfed.org/press-releases/california-federation-of-labor-unions-endorse-for-governor-and-other-statewide-races-for-2026-primary-election/). The individuals receiving this endorsement were Attorney General Rob Bonta, Lt. Governor Eleni Kounalakis, State Senator Toni Atkins, and Congresswoman Katie Porter [[^]](https://calaborfed.org/press-releases/california-federation-of-labor-unions-endorse-for-governor-and-other-statewide-races-for-2026-primary-election/).

This multi-candidate strategy reflects a competitive primary landscape. This collective endorsement indicates a multi-candidate strategy from the influential labor federation [[^]](https://www.capradio.org/articles/2026/03/18/californias-powerful-labor-forces-are-divided-on-who-should-be-the-states-next-governor/). It demonstrates that at this early stage, the federation is not consolidating institutional support behind one individual [[^]](https://www.capradio.org/articles/2026/03/18/californias-powerful-labor-forces-are-divided-on-who-should-be-the-states-next-governor/). The decision also highlights the crowded and competitive nature of the gubernatorial primary race, suggesting a potentially divided landscape among organized labor [[^]](https://www.sacbee.com/news/politics-government/capitol-alert/article315079488.html). Therefore, no single candidate will be the first to secure an exclusive statewide endorsement from the California Labor Federation, AFL-CIO, since four candidates received the endorsement simultaneously [[^]](https://calaborfed.org/press-releases/california-federation-of-labor-unions-endorse-for-governor-and-other-statewide-races-for-2026-primary-election/).

## Which Republican Candidates Do California Republicans Endorse for Governor?

CRA Endorsement | Sheriff Chad Bianco [[^]](https://cragop.org/2026/04/09/california-republican-assembly-endorses-sheriff-chad-bianco-for-governor/) |
Top Sheriffs Association Endorsement | Sheriff Chad Bianco [[^]](https://californiacourier.news/2026/04/chad-bianco-california-governor-sheriffs-endorsement/) |
Primary Strategy | Multiple candidates for top-two primary [[^]](https://capoliticalreview.com/2026/04/03/two-republicans-are-fighting-for-california-governor-why-a-tie-is-their-best-strategy/) |

**Republican organizations show efforts to consolidate behind Chad Bianco**

Republican organizations show efforts to consolidate behind Chad Bianco. The California Republican Assembly and California's Top Sheriffs Association have officially endorsed Sheriff Chad Bianco for Governor [[^]](https://cragop.org/2026/04/09/california-republican-assembly-endorses-sheriff-chad-bianco-for-governor/). The California Republican Party also undertook a formal vote to endorse a gubernatorial candidate, signifying an effort towards consolidating party support behind a single individual. However, this consolidation effort exists alongside other endorsements, such as Donald Trump's backing of Hilton [[^]](https://www.foxnews.com/politics/trump-backs-hilton-ahead-california-gop-vote-testing-biancos-grip-party-endorsement).

Multiple Republican contenders remain active despite consolidation attempts. The Republican field for governor remains active with multiple contenders, characterized by some as "warring GOP candidates" [[^]](https://nymag.com/intelligencer/article/californias-warring-gop-candidates-need-each-other-to-win.html). Strategic analyses suggest that maintaining several strong Republican candidates could be the most effective approach to secure two spots in California's top-two primary system [[^]](https://capoliticalreview.com/2026/04/03/two-republicans-are-fighting-for-california-governor-why-a-tie-is-their-best-strategy/). The research did not provide specific evidence regarding financial or messaging consolidation from the Howard Jarvis Taxpayers Association PAC or Lincoln Clubs for any particular candidate.

## Which 2026 California Gubernatorial Candidate Leads Local Endorsements?

Eric Swalwell Endorsements | Announced "local elected leaders" endorsements [[^]](https://www.ericswalwell.com/press/local-elected-leaders-endorse-swalwell-for-governor) |
Betty Yee Endorsement Page | Features "Endorse Betty" page [[^]](https://bettyyee.com/endorse-betty/) |
Antonio Villaraigosa Endorsements | Lists "Endorsements" on campaign site [[^]](https://www.antonio2026.com/endorsements) |

**Specific endorsement data from local officials remains unavailable for analysis**

Specific endorsement data from local officials remains unavailable for analysis. The provided research does not contain specific data points detailing the number of endorsements from mayors and county supervisors in Los Angeles County and the San Francisco Bay Area by the end of 2025 for the 2026 gubernatorial race. Consequently, it is not possible to conclusively identify which candidate demonstrates dominant strength in securing these particular local endorsements or to infer a superior ground game based on the available information.

Candidate websites show general endorsements, but lack precise regional details. While Eric Swalwell has announced endorsements from "local elected leaders" for the 2026 gubernatorial race [[^]](https://www.ericswalwell.com/press/local-elected-leaders-endorse-swalwell-for-governor) and his campaign website features an "Endorsements" section [[^]](https://www.ericswalwell.com/endorsements), and similarly, Betty Yee [[^]](https://bettyyee.com/endorse-betty/) and Antonio Villaraigosa [[^]](https://www.antonio2026.com/endorsements) also feature endorsement sections, these do not provide the specific counts of endorsements from mayors and county supervisors in the key media markets of Los Angeles County and the San Francisco Bay Area by the specified deadline. Previous local endorsements, such as four of five Los Angeles County supervisors endorsing Karen Bass for mayor, illustrate a regional pattern [[^]](https://www.sgvtribune.com/2026/03/20/four-of-the-five-la-county-supervisors-endorsed-karen-bass-for-mayor/), but this data does not pertain to the 2026 gubernatorial race or the specific candidates in question for this analysis.

## What is the 2026 California Governor Race Filing Deadline and Candidate Status?

Official Filing Deadline | March 2026 [[^]](https://calmatters.org/politics/2026/03/california-governor-candidates/), [[^]](https://www.capradio.org/articles/2026/03/09/the-field-is-set-meet-the-candidates-officially-running-for-california-governor/), [[^]](https://www.sos.ca.gov/elections/upcoming-elections/primary-election-june-2-2026/key-dates-and-deadlines) |
Ian Calderon Status | Dropped out, endorsed Eric Swalwell [[^]](https://www.kcra.com/article/california-ian-calderon-drops-out-governors-race/70623032) |
Future Dropouts/Fundraising | No information on Villaraigosa/Thurmond dropouts or fundraising transfers (Research findings) [[^]](https://calmatters.org/politics/2026/03/california-governor-candidates/) |

**The official candidate filing deadline for governor is March 2026**

The official candidate filing deadline for governor is March 2026. The official candidate filing deadline for the 2026 California Governor's race is in March 2026, which sets the field of candidates [[^]](https://calmatters.org/politics/2026/03/california-governor-candidates/), [[^]](https://www.capradio.org/articles/2026/03/09/the-field-is-set-meet-the-candidates-officially-running-for-california-governor/), [[^]](https://www.sos.ca.gov/elections/upcoming-elections/primary-election-june-2-2026/key-dates-and-deadlines). The question's premise of a "late 2025" deadline is not supported by the official timeline provided. Available research does not offer predictive information on whether specific individuals like Villaraigosa or Thurmond will have dropped out by late 2025, nor do sources contain details regarding the transfer of fundraising infrastructure from withdrawing candidates to remaining frontrunners.

Ian Calderon has withdrawn and endorsed Eric Swalwell. Among the Democratic hopefuls, Ian Calderon formally dropped out of the gubernatorial race. Upon his withdrawal, Calderon publicly endorsed Eric Swalwell as his preferred candidate for California governor [[^]](https://www.kcra.com/article/california-ian-calderon-drops-out-governors-race/70623032). While there have been calls by the California Democratic Party chair for candidates without a "viable path" to exit the race, these reports do not specify which candidates would comply or detail their subsequent endorsements or fundraising transfers [[^]](https://www.nbcnews.com/politics/2026-election/california-democratic-chair-governor-candidates-drop-out-rcna261511), [[^]](https://www.greenwichtime.com/news/politics/article/top-california-democrat-flops-with-call-for-21958699.php). The existing information focuses on actual dropouts and endorsements, such as Calderon's for Swalwell [[^]](https://www.kcra.com/article/california-ian-calderon-drops-out-governors-race/70623032), or the final set of candidates after the official March 2026 filing deadline [[^]](https://calmatters.org/politics/2026/03/california-governor-candidates/), [[^]](https://www.capradio.org/articles/2026/03/09/the-field-is-set-meet-the-candidates-officially-running-for-california-governor/).

## What Could Change the Odds

**Key takeaway.** Catalyst analysis unavailable.

## Key Dates & Catalysts

- **Expiration:** November 03, 2027
- **Closes:** November 03, 2027

## Decision-Flipping Events

- Catalyst analysis unavailable.

## Related Research Reports

- [Will Andrew Tate's party win a seat in the next UK election?](/markets/elections/will-andrew-tate-s-party-win-a-seat-in-the-next-uk-election/)
- [Democratic Senate primaries: progressives sweep?](/markets/elections/us-elections/democratic-senate-primaries-progressives-sweep/)
- [Average traffic through the Strait of Hormuz on Apr 1, 2026?](/markets/elections/iran/average-traffic-through-the-strait-of-hormuz-on-apr-1-2026/)
- [Will Iran become a democracy in 2026?](/markets/elections/iran/will-iran-become-a-democracy-in-2026/)

## Historical Resolutions

No historical resolution data available for this series.

## Disclaimer

This content is for informational and educational purposes only and does not constitute financial, investment, legal, or trading advice.
Prediction markets involve risk of loss. Past performance does not guarantee future results.
We are not affiliated with Kalshi or any prediction market platform. Market data may be delayed or incomplete.

### Data Sources & Model Transparency

**Data Sources:** Octagon Deep Research aggregates information from multiple sources including news, filings, and market data.

**Freshness:** Analysis is generated periodically and may not reflect the latest developments. Verify critical information from primary sources.