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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Will the Republicans win the Ohio governor race in 2026?
22%
▲ +4.0pt
Vol $39.1K today · $547K total
Possibly the same event, on the other platform
Kalshi
Will Republicans win the Senate race in Arizona?
37%
Kalshi
Will Republicans win the Senate race in Alaska?
63%
Kalshi
Will Republicans win the Senate race in Kansas?
77%
Kalshi
Will Republicans win the Senate race in Iowa?
63%
Kalshi
Will Republicans win the Senate race in Louisiana?
87%
Kalshi
Will Republicans win the Senate race in Arkansas?
93%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.