Polymarket vs. Kalshi
Compare markets
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.
Possibly the same event, on the other platform
Kalshi
Will the Democratic party win the House, the Democratic party win the Senate, a…
49%
Kalshi
Will Democratics win the Senate race in Kansas?
26%
Kalshi
Will Democratics win the Senate race in Arizona?
74%
Kalshi
Will Republicans win the Senate race in Pennsylvania?
25%
Kalshi
Will Republicans win the Senate race in Arizona?
26%
Kalshi
Will Democratics win the Senate race in North Carolina?
64%
Change ×
Will the Democrats win the Michigan Senate race in 2026?
71%
▼ 1.0pt
Vol $40.9K today · $1M total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.