Blue tsunami in 2026? — odds by venue

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OutcomePolymarketKalshiBest price
65%62%62% on Kalshi

Venues

Resolution rules

Polymarket

This market will resolve to “Yes” if both of the following conditions are met as a result of the 2026 midterm elections: - Democrats have a seat count of 235 or more in the House - Democrats have a seat count of 51 or more in the Senate Otherwise, this market will resolve to “No”. The Senate seat count includes all regular and special Senate elections that determine representation in the upcoming 120th Congress and are scheduled to take place in November 2026 as of October 31, 2026. Vacant Senate seats for which no election or special election to fill the seat is scheduled to take place in…

Kalshi

If ALL of the following occur: Democrats hold 235 or more seats in the House after the 2026 midterms AND Democrats hold 51 or more seats in the Senate after the 2026 midterms, then the market resolves to Yes. This is a combination market requiring ALL specified outcomes to occur for the contract to pay out. If ANY single component resolves to No or becomes impossible, the entire contract immediately resolves to No. Each component is resolved according to its corresponding Kalshi ruleset: "Will Democrats hold 235 or more seats in the House?" uses SEATSCONGRESS, "Will Democrats hold 51 or more…