Polymarket vs. Kalshi
Compare markets
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.
Change ×
Will the Democratic party hold exactly 53 Senate seats in the 121st Congress?
15%
▲ +3.0pt
Vol $47 today · $13.5K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.