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.
Possibly the same event, on the other platform
Polymarket
Will Mark Kelly win the 2028 Democratic presidential nomination?
2%
Polymarket
Will Mark Cuban win the 2028 Democratic presidential nomination?
0%
Polymarket
Will J.B. Pritzker win the 2028 Democratic presidential nomination?
1%
Polymarket
Will Raphael Warnock win the 2028 Democratic presidential nomination?
2%
Polymarket
Will James Talarico win the 2028 Democratic presidential nomination?
3%
Polymarket
Will Jon Ossoff win the 2028 Democratic presidential nomination?
15%
Change ×
Will Mark Kelly be the Democratic Presidential nominee in 2028?
4%
– 0.1pt
Vol $11.7K today · $8.2M total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.