2026 Midterms: Control of Congress Odds

Prediction markets price 2026 Balance of Power: D Senate, D House at 49.5%.

49.5%0.0 pts 24h

2026 Balance of Power: D Senate, D House

Updated · Volume $11.6M

44%47%50%54%Aug 14Aug 21Aug 29Sep 5Sep 12
OutcomeProbability24h
2026 Balance of Power: D Senate, D House49.5%0.0
2026 Balance of Power: R Senate, D House35.5%-1.0
2026 Balance of Power: R Senate, R House12.5%0.0
2026 Balance of Power: D Senate, R House1.6%0.0
2026 Balance of Power: Other0.4%0.0

The top 5 outcomes account for 100.0% of the total probability.

Context

This probability comes from live prices on prediction markets, where a contract's price equals the implied chance of the outcome. It updates continuously as trading occurs.

This market has 5 tracked outcomes and $11.6M in total trading volume.

The most closely contested outcome, 2026 Balance of Power: D Senate, D House, is priced at 49.5%.

Data: Polymarket · Methodology · Not financial advice

Embed this widget
TypeTheme

Free to use. Please keep the “ChanceIndex” attribution. It updates itself — no scripts, no cookies.