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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Polymarket Sports

P.J. Washington: Rebounds O/U 11.5

8% – 0.5pt

Vol $0 today · $0 total

Market B

Possibly the same event, on the other platform

Kalshi Will the Republican Party win the 2028 Washington Senate District 11 election? 4% Kalshi Will the Democratic Party win the 2028 Washington Senate District 11 election? 97% Kalshi Will the Republican Party win the 2028 Washington House District 11, Position 1… 4% Kalshi Will the Democratic Party win the 2028 Washington House District 11, Position 1… 97% Kalshi Will the Republican Party win the 2028 Washington House District 11, Position 2… 4% Kalshi Will the Democratic Party win the 2028 Washington House District 11, Position 2… 97%

Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.