2026 Midterms: House Popular Vote Margin of Victory

Polymarket traders put "Democrats 8-10%" at 27.5% on "2026 Midterms: House Popular Vote Margin of Victory". There are 13 possible outcomes. It resolves on Nov 3.

Most likely right now
Democrats 8-10%
28%
PoliticsVol -Total volume $125KLiquidity $229Kin 2 months (Nov 3)
Current probability

Aug 25 · right column is the 24-hour change (pp)

0%50%100%
Democrats 8-10%
27.5%
Democrats 10-12%
23.5%
Democrats 6-8%
19.5%
Democrats 4-6%
12.5%
Democrats 12-14%
5.75%
0.8
Democrats 2-4%
5.55%
Republicans 0-2%
3.55%
Republicans 2-4%
3.25%
Democrats 0-2%
1.80%
Republicans 6%+
1.20%
Democrats 16%+
1.10%
Democrats 14-16%
0.65%
Republicans 4-6%
0.55%

Probability over time

Only one day recorded so far. We record once each morning, so the line starts tomorrow.

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Probabilities are Polymarket trade prices, formed by participants betting real money. They are not official forecasts and are a poor basis for investment decisions.