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.
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Will Vivek Ramaswamy win the 2028 Republican presidential nomination?
0%
– 0.0pt
Vol $2.2K today · $16.1M total
Possibly the same event, on the other platform
Kalshi
Will Vivek Ramaswamy be the nominee for the Presidency for the Republican party?
0%
Kalshi
Will Republican win the Presidency in 2028?
41%
Kalshi
Will J.D. Vance be the nominee for the Presidency for the Republican party?
43%
Kalshi
Will J.B. Pritzker be the Democratic Presidential nominee in 2028?
3%
Kalshi
Will Marco Rubio be the nominee for the Presidency for the Republican party?
18%
Kalshi
Will Nikki Haley be the nominee for the Presidency for the Republican party?
0%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.