MA-09 House Election Margin of Victory

Polymarket traders put "Democrat 30-35%" at 31.5% on "MA-09 House Election Margin of Victory". Down 3.5%p from yesterday. There are 9 possible outcomes. It resolves on Nov 3.

Most likely right now
Democrat 30-35%
3.532%
PoliticsVol -Total volume $191Liquidity $9.8Kin 2 months (Nov 3)
Current probability

Aug 26 · right column is the 24-hour change (pp)

0%50%100%
Democrat 30-35%
31.5%
3.5
Democrat 15-20%
29.0%
5.0
Democrat 5-10%
28.0%
Democrat 0-5%
27.0%
0.5
Democrat 25-30%
25.5%
4.0
Democrat 35%+
25.0%
2.5
Democrat 10-15%
22.5%
7.5
Democrat 20-25%
15.0%
11.0
Republican Wins
3.35%
9.2

Probability over time

Democrat 30-35%
Democrat 15-20%
Democrat 5-10%
Democrat 0-5%
Democrat 25-30%
Democrat 35%+
02550751008/258/26
2026-08-25 ~ 2026-08-26 · y-axis %

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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.