Polymarket vs. Kalshi
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See where the two biggest prediction markets disagree. Pick any two markets, or start from the biggest gaps below: prices, volume, history and the resolution rules, side by side.
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Will the Republican Party win the 2028 Washington House District 23, Position 1 election?
4%
– 0.0pt
Vol $0 today · $0 total
Possibly the same event, on the other platform
Polymarket
Will the Republican Party win the CA-23 House seat?
80%
Polymarket
Will the Republican Party win the NC-03 House seat?
30%
Polymarket
Will J.D. Vance win the 2028 Republican presidential nomination?
34%
Polymarket
Will the Republican Party win the AZ-02 House seat?
81%
Polymarket
Will the Democratic Party win the CA-23 House seat?
20%
Polymarket
Will Joe Kent win the 2028 Republican presidential nomination?
1%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.