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
Kalshi
Will Kamala Harris be the Democratic Presidential nominee in 2028?
6%
Kalshi
Who will win the 2028 United States vice presidential election?
13%
Kalshi
Who will win the 2028 United States vice presidential election?
4%
Kalshi
Who will win the 2028 United States vice presidential election?
4%
Kalshi
Who will win the 2028 United States vice presidential election?
2%
Kalshi
Who will win the 2028 United States vice presidential election?
1%
Change ×
Will Kamala Harris win the 2028 US Presidential Election?
4%
– 0.2pt
Vol $20.7K today · $9.4M total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.