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.
Possibly the same event, on the other platform
Kalshi
Will the Democratic party win the Senate in 2028?
54%
Kalshi
Will the Democratic party win the House, the Democratic party win the Senate, a…
47%
Kalshi
Will Democrats win the Senate race in Pennsylvania?
70%
Kalshi
Will Summer Lee be the Democratic nominee for the Senate in Pennsylvania?
33%
Change ×
Will the Democratic Party control the Senate after the 2026 Midterm elections?
65%
– 0.0pt
Vol $64.3K today · $4.1M total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.