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 Donald Trump win the 2028 US Presidential Election?
1%
– 0.0pt
Vol $162 today · $10.7M total
Possibly the same event, on the other platform
Kalshi
Will Donald Trump announce a run for President of the United States before Nov …
19%
Kalshi
Will Donald Trump endorse Himself in the 2028 presidential election before Mar …
1%
Kalshi
Will Donald Trump endorse J.D. Vance in the 2028 presidential election before M…
48%
Kalshi
Will Donald Trump announce a run for President of the United States before Jan …
16%
Kalshi
Will Donald J. Trump be the nominee for the Presidency for the Republican party?
2%
Kalshi
Will Donald Trump endorse Marco Rubio in the 2028 presidential election before …
27%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.