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 Republicans win the Senate race in Kansas?
59%
Kalshi
Will Democratics win the Senate race in Ohio?
47%
Kalshi
Will Republicans win the Senate race in Ohio?
54%
Kalshi
Will Democratics win the Senate race in Kansas?
27%
Kalshi
Will Democratics win the Senate race in Iowa?
36%
Kalshi
Will Republicans win the Senate race in Idaho?
89%
Change ×
Will Mary Peltola win the Alaska Senate race in 2026?
75%
▲ +1.0pt
Vol $22.2K today · $871.5K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.