Polymarket vs. Kalshi
Compare markets
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.
Change ×
Will Renan Santos win the 2030 Brazilian presidential election?
7%
▲ +4.5pt
Vol $68 today · $640 total
Possibly the same event, on the other platform
Polymarket
Will the Democrats win the 2028 US Presidential Election?
68%
Polymarket
Will the Republicans win the 2028 US Presidential Election?
33%
Polymarket
Will JD Vance win the 2028 US Presidential Election?
18%
Polymarket
Will Glenn Youngkin win the 2028 US Presidential Election?
0%
Polymarket
Will Kamala Harris win the 2028 US Presidential Election?
4%
Polymarket
Will Tom Cotton win the 2028 US Presidential Election?
0%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.