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 Robert F. Kennedy Jr. win the 2028 Republican presidential nomination?
0%
– 0.1pt
Vol $8.1K today · $17M total
Possibly the same event, on the other platform
Kalshi
Will Robert F. Kennedy Jr. be the nominee for the Presidency for the Republican…
0%
Kalshi
Will Donald J. Trump Jr. be the nominee for the Presidency for the Republican p…
2%
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 James Talarico and Marco Rubio be the 2028 Democratic and Republican presi…
3%
Kalshi
Will Josh Shapiro and JD Vance be the 2028 Democratic and Republican presidenti…
2%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.