PolymarketEvent6 live of 13 outcomes

2026 Midterms: House Popular Vote Margin of Victory

6 live outcomes · highest priced: Democrats 10-12% at 19% (−1 pts in 24h) · first close Nov 4, 2026 · $158.6K total volume

About this event

This event tracks the popular vote margin of victory between the Democratic Party and the Republican Party in the 2026 U.S. House of Representatives midterm elections, measuring which specific percentage margin bracket the final results will fall into.

How the outcomes relate

The event is structured as a set of mutually exclusive margin brackets. Because the rules specify that a value falling exactly between two brackets resolves to the higher range bracket, at most one market can resolve Yes.

How it resolves

Markets resolve based on the popular vote margin of victory between Democratic and Republican candidates for voting members of the U.S. House across the 50 states. The percentage for each party is calculated by dividing its total valid candidate votes by all valid votes cast for U.S. House candidates. A market resolves Yes if the final margin falls within its specified bracket, with exact boundary ties going to the higher range. If the elections do not occur by June 30, 2027, at 11:59 PM ET, the market resolves to 'Other'.

Key dates

  • Election date: — Scheduled date for the 2026 U.S. House of Representatives midterm elections.
  • Resolution deadline: — Deadline by 11:59 PM ET for the election to take place and results to be published.

Resolution source

US Clerk of the House

AI-generated analysis · google/gemini-3.7-flash ·

Outcomes for 2026 Midterms: House Popular Vote Margin of Victory
OutcomePrice24hGotcha riskTradabilityCloses
Democrats 10-12%19%▼ 1MedMed
Democrats 0-2%5%▲ 2LowMed
Democrats 2-4%3%▼ 2LowMed
Democrats 14-16%3%±0LowMed
Democrats 16%+3%±0LowMed
Republicans 2-4%2%±0LowMed
Democrats 12-14%10%±0LowMed
Democrats 8-10%——Not ratedMed
Democrats 6-8%——Not ratedMed
Democrats 4-6%——Not ratedMed
Republicans 0-2%——LowMed
Republicans 4-6%——Not ratedMed
Republicans 6%+——Not ratedMed

Highest-priced outcome

Democrats 10-12% · 7 daysRange 18–23%