Control of the House of Representatives determines the legislative agenda. Polymarket offers prediction markets on which party will hold the majority.
House Control Markets
- Majority party: Republicans or Democrats control the House
- Seat counts: Number of seats each party wins
- Margin: Size of the majority
What Moves House Odds
- Generic ballot polls: Which party voters prefer
- Redistricting: New district maps
- Retirements: Open seats are more competitive
- Presidential coattails: Top of ticket affects downballot
- Economic conditions: Historically impacts midterms
Key Races to Watch
House control often comes down to a handful of competitive districts in swing states like California, New York, and Pennsylvania.
Track Congressional Markets with Alphascope
Alphascope aggregates election markets:
- Predictions → All congressional markets
- News → Political news affecting odds