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.
Change ×
Will Donald J. Trump Jr. be the nominee for the Vice Presidency for the Republican party?
4%
– 0.1pt
Vol $2 today · $78.7K total
Possibly the same event, on the other platform
Polymarket
Will Donald Trump Jr. win the 2028 Republican presidential nomination?
2%
Polymarket
Will Donald Trump win the 2028 Republican presidential nomination?
2%
Polymarket
Will Ivanka Trump win the 2028 Republican presidential nomination?
1%
Polymarket
Will Eric Trump win the 2028 Republican presidential nomination?
0%
Polymarket
Will Donald Trump Jr. win the 2028 US Presidential Election?
1%
Polymarket
Will J.D. Vance win the 2028 Republican presidential nomination?
44%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.