CA-18 House Election Margin of Victory

Polymarket traders put "Democrat 45%+" at 32.0% on "CA-18 House Election Margin of Victory". Down 1.5%p from yesterday. $6 traded in the last 24 hours. There are 10 possible outcomes. It resolves on Nov 3.

Most likely right now
Democrat 45%+
1.532%
PoliticsVol $6Total volume $6Liquidity $1.0Kin 2 months (Nov 3)
Current probability

Sep 13 · right column is the 24-hour change (pp)

0%50%100%
Democrat 45%+
32.0%
1.5
Democrat 40-45%
32.0%
2.5
Democrat 35-40%
32.0%
1.5
Democrat 30-35%
32.0%
2.5
Democrat 20-25%
32.0%
1.5
Democrat 0-5%
32.0%
0.5
Democrat 15-20%
31.0%
2.5
Democrat 25-30%
30.5%
3.5
Democrat 5-15%
30.5%
2.0
Republican Wins
29.4%
26.5

Probability over time

Democrat 45%+
Democrat 40-45%
Democrat 35-40%
Democrat 30-35%
Democrat 20-25%
Democrat 0-5%
02550751009/129/13
2026-09-12 ~ 2026-09-13 · 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.