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.
Possibly the same event, on the other platform
Kalshi
Will the Republican party win the House, the Republican party win the Senate, a…
14%
Kalshi
Will Republicans win the Senate race in Arizona?
25%
Kalshi
Will Republicans win the Senate race in Pennsylvania?
25%
Kalshi
Will Republicans win the Senate race in South Carolina?
78%
Kalshi
Will Republicans win the Senate race in North Carolina?
37%
Kalshi
Will Republican win the Presidency in 2028?
41%
Change ×
Will there be a Hormuz agreement and the Republicans win the Senate?
4%
▲ +1.4pt
Vol $72K today · $225K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.