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 JD Vance defeat Jon Ossoff in the 2028 presidential election, with Jon Ossoff as the Democratic nominee and JD Vance as the Republican nominee?
2%
– 0.0pt
Vol $0 today · $500 total
Possibly the same event, on the other platform
Polymarket
Will Jon Ossoff win the 2028 Democratic presidential nomination?
15%
Polymarket
Will J.D. Vance win the 2028 Republican presidential nomination?
44%
Polymarket
Will Jon Ossoff win the 2028 US Presidential Election?
9%
Polymarket
Will Jon Stewart win the 2028 Democratic presidential nomination?
1%
Polymarket
Will JD Vance win the 2028 US Presidential Election?
20%
Polymarket
Will J.B. Pritzker win the 2028 Democratic presidential nomination?
1%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.