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.
Possibly the same event, on the other platform
Polymarket
Will Gavin Newsom win the 2028 Democratic presidential nomination?
14%
Polymarket
Will J.D. Vance win the 2028 Republican presidential nomination?
47%
Polymarket
Will Doug Burgum win the 2028 Republican presidential nomination?
0%
Polymarket
Will Kamala Harris win the 2028 Democratic presidential nomination?
7%
Polymarket
Will James Talarico win the 2028 Democratic presidential nomination?
3%
Polymarket
Will Elon Musk win the 2028 Republican presidential nomination?
0%
Change ×
Will Gavin Newsom and JD Vance be the 2028 Democratic and Republican presidential nominees?
12%
– 0.5pt
Vol $194 today · $79.3K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.