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 Arizona governor race in 2026?
10%
▼ 1.0pt
Vol $53.5K today · $175K total
Possibly the same event, on the other platform
Kalshi
Will Republicans win the Senate race in Arizona?
36%
Kalshi
Will Republicans win the Senate race in Kansas?
77%
Kalshi
Will Republicans win the Senate race in Ohio?
54%
Kalshi
Will Democratics win the Senate race in Arizona?
64%
Kalshi
Will Republicans win the Senate race in Vermont?
9%
Kalshi
Will Republicans win the Senate race in Wisconsin?
36%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.