PolymarketPoliticsDevelopingUpdated 5m ago

Will Tom Steyer win the California Governor Election in 2026?

As of Oct 17, 2026, 4:48 PM ET, Polymarket priced this market at 0.4% (little changed over 24 hours). It had $22.9K traded in the past 24 hours, $132.6K of order-book liquidity and a bid-ask spread of 0.1 pts. probcast.co rates the support behind this price as moderate.

Market probability
0.4%
Little changed over 24 hours

Thin market where small orders can move the price — though most recent trading came from one account.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Moderate

Consensus stability

Stable

Contract clarity

High

Can you trust this price?

Two different questions: how hard the price is to move, and whose trading set it.

Market capacity

How hard is it to move this price?

ThinTight spread

Order-book liquidity

$132.6K

Bid-ask spread

0.1 pts

24h volume

$22.9K

Total volume

$4.8M

It would take roughly $613.4 of buying to move the price up by ~5 pts.

Little money on the book — a modest order can move this price, so treat swings with care.

Who's trading

Whose opinion is this price?

One account dominates
91%of the traded money came from the single largest account

Accounts

85

Trades

200

over 21 days

Largest order

$100

$212 traded across these 200 trades (last 21 days).

One account did most of the recent trading — the price reflects that account's view more than a crowd's.

Recent trade activity$212 traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to according to the candidate who wins the 2026 California gubernatorial election currently scheduled for November 3, 2026. If the results of the election are not confirmed by July 31, 2027, this market will resolve to "Other".

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

This market will resolve to according to the candidate who wins the 2026 California gubernatorial election currently scheduled for November 3, 2026. If the results of the election are not confirmed by July 31, 2027, this market will resolve to "Other". The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on official certification.

What could move this market next?

  • The scheduled event takes placeNovember 3, 2026 at 11:59 PM ET

    The contract resolves on the event's outcome.

Derived from the contract's own mechanics as of Oct 17, 4:54 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±14 pts.

Quote-drivenLegacy movement classifier: watch

What's happening

medium classifier confidence
Quote-driven

A tight, deep, quote-driven book with little executed flow. The price is stable but reflects resting quotes more than active trading.

  • Tight spread on a liquid, calm market

The latest price is a usable but caveated read — weigh it with the market state.

More details — reliability score, dynamics, durability
Reliability score
52Medium
Where the price path tends to go next1709 observed
  • Choppy / mean-reverting98%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life ~4w
PredictabilityStable

Secondary read: leaning toward Thin market.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Change (pts)1H0.06H0.024H0.07D0.0

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