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 Tom Cotton win the 2028 Republican presidential nomination?
0%
– 0.0pt
Vol $17.5K today · $1.8M total
Possibly the same event, on the other platform
Kalshi
Will Republican win the Presidency in 2028?
41%
Kalshi
Will a Trump family member the 2028 Republican presidential nominee?
6%
Kalshi
Will J.D. Vance be the nominee for the Presidency for the Republican party?
41%
Kalshi
Will Spencer Pratt be the nominee for the Presidency for the Republican party?
1%
Kalshi
Will Brian Kemp be the nominee for the Presidency for the Republican party?
2%
Kalshi
Will Tucker Carlson be the nominee for the Presidency for the Republican party?
3%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.