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 Democratics win the Senate race in Wisconsin?
65%
Kalshi
Will Democratics win the Senate race in Iowa?
36%
Kalshi
Will Democratics win the Senate race in Kansas?
28%
Kalshi
Will Republicans win the Senate race in Florida?
85%
Kalshi
Will Republicans win the Senate race in Iowa?
63%
Kalshi
Will Democratics win the Senate race in Arizona?
73%
Change ×
Will Dan Sullivan win the Alaska Senate race in 2026?
26%
– 0.0pt
Vol $57.6K today · $587.1K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.