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 Josh Shapiro defeat JD Vance in the 2028 presidential election, with Josh Shapiro as the Democratic nominee and JD Vance as the Republican nominee?
4%
– 0.0pt
Vol $0 today · $701 total
Possibly the same event, on the other platform
Polymarket
Will Josh Shapiro win the 2028 Democratic presidential nomination?
6%
Polymarket
Will J.D. Vance win the 2028 Republican presidential nomination?
47%
Polymarket
Will Doug Burgum win the 2028 Republican presidential nomination?
0%
Polymarket
Will Kamala Harris win the 2028 Democratic presidential nomination?
7%
Polymarket
Will James Talarico win the 2028 Democratic presidential nomination?
3%
Polymarket
Will Elon Musk win the 2028 Republican presidential nomination?
0%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.