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 Kamala Harris be first this list to declare for 2028 United States presidential election before Nov 7, 2028?
3%
– 0.3pt
Vol $0 today · $15.7K total
Possibly the same event, on the other platform
Polymarket
Will Kamala Harris win the 2028 US Presidential Election?
4%
Polymarket
Will Rahm Emanuel win the 2028 US Presidential Election?
1%
Polymarket
Will Kamala Harris win the 2028 Democratic presidential nomination?
6%
Polymarket
Will Elon Musk win the 2028 US Presidential Election?
0%
Polymarket
Will Gretchen Whitmer win the 2028 US Presidential Election?
0%
Polymarket
Will Michelle Obama win the 2028 US Presidential Election?
0%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.