Will Republicans win any Senate or Governor's Election in a Biden-Trump state?

• 01
  Price move

  Up 20pp over 24h

  Now 89¢; flat in the last hour.

• 02
  Liquidity

  Thin liquidity

  Only $12.8k of visible book — small orders can move the line. Treat the probability as a soft estimate.

Each factor is grounded in a single named metric you can verify on this page — probability, volume, liquidity, signal, resolution state. No predictions, no prose hallucinations.

This market will resolve to "Yes" if, in the 2026 midterm elections, Republicans win a gubernatorial or US Senate election in any state that was won by Donald Trump in the the 2024 US presidential election but was not won by Donald Trump in the 2020 election. Otherwise, this market will resolve to "No". This market will resolve based on the results of all elections, including special elections, that are scheduled to occur in November 2026 as of October 31, 2026. If a required runoff for any such election could change the market’s outcome, the market will remain open until that runoff is conclusively called by this market’s resolution sources. For purposes of this market, the relevant states won by Donald Trump in 2024 but not in 2020 are Wisconsin, Michigan, Pennsylvania, Georgia, Nevada, and Arizona. No other states will be considered for purposes of this market, and no disputes of any state result from 2020 or 2024 will be considered relevant. ​​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 Senate elections are conclusively called by this market's resolution sources. A Senate candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the Senate elections are conclusively called by this market's resolution sources. This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by either the United States government, specifically the Federal Election Commission (https://www.fec.gov/), or by the official state election authorities of the states listed above.

Categories come from a deterministic engine: manual overrides (highest priority) → sports hard markers → event-tag rules → keyword rules → Gamma category hint → default. The engine is versioned in category-overrides.ts; methodology lives at /methodology.