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 Democratic win the 2028 popular vote by 8.0% to 8.99%?
14%
▲ +3.5pt
Vol $2.7K today · $30.2K total
Possibly the same event, on the other platform
Polymarket
Will J.B. Pritzker win the 2028 Democratic presidential nomination?
1%
Polymarket
Will Chelsea Clinton win the 2028 Democratic presidential nomination?
1%
Polymarket
Will Josh Stein win the 2028 Democratic presidential nomination?
0%
Polymarket
Will Mitch Landrieu win the 2028 Democratic presidential nomination?
0%
Polymarket
Will Wes Moore win the 2028 Democratic presidential nomination?
2%
Polymarket
Will Kamala Harris win the 2028 Democratic presidential nomination?
6%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.