Polymarket USOpen

2026 Midterms: Democratic House Seats? — 210+

Yes95%
No6%

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24h volume$462
7d volume—
30d volume—
Liquidity—
Spread1%
ResolvesNov 18, 2026in 25 days

Probability history

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Probability history0%25%50%75%100%Oct 13Oct 16Oct 19Oct 21Oct 24Shaded periods have no successful hourly price check.Shaded periods have no successful hourly price check.Shaded periods have no successful hourly price check.Shaded periods have no successful hourly price check.Shaded periods have no successful hourly price check.Shaded periods have no successful hourly price check.

Based on this market’s outcome prices, expressed as probabilities.

Resolution rules

This market will settle to Yes if the Democratic Partys seat count in the U.S. House of Representatives is greater than or equal to 210 as a result of the 2026 United States midterm election scheduled for November 3, 2026. Outcome sourced from relevant state electoral authorities, and the United States House of Representatives. The seat count includes all House elections in the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th Congress. Where a seat is decided by a runoff, the runoff result will determine attribution of that seat. Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation, or vacates their seat, between election day and the formal organization of Congress, the seat is attributed to the party under which the member was elected. House members elected as independents who formally caucus with, or, for newly elected members, who announce their intent to caucus with, the Democratic party are included in the count. If the caucus decisions of members of the House elected as independents cannot be determined on the date of the election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party.

Other legs of this event

MarketVenuePriceStatus
2026 Midterms: Democratic House Seats? — 218+PolymarketUs91% YesOpen
2026 Midterms: Democratic House Seats? — 235+PolymarketUs55% YesOpen
2026 Midterms: Democratic House Seats? — 230+PolymarketUs78% YesOpen
2026 Midterms: Democratic House Seats? — 215+PolymarketUs91% YesOpen
2026 Midterms: Democratic House Seats? — 225+PolymarketUs81% YesOpen
2026 Midterms: Democratic House Seats? — 220+PolymarketUs89% YesOpen
2026 Midterms: Democratic House Seats? — 240+PolymarketUs55% YesOpen
2026 Midterms: Democratic House Seats? — 250+PolymarketUs81% NoOpen
2026 Midterms: Democratic House Seats? — 245+PolymarketUs63% NoOpen

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As of Oct 24, 02:08 PM UTC