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
Polymarket
Will the Republican Party hold 47 or fewer Senate seats after the 2026 midterm …
40%
Polymarket
Will the Republican Party hold exactly 51 Senate seats after the 2026 midterm e…
8%
Polymarket
Will the Republican Party hold exactly 49 Senate seats after the 2026 midterm e…
12%
Polymarket
Will Ra'am win fewer than 4 seats in the 2026 Knesset elections?
0%
Polymarket
Will the Republican Party hold exactly 50 Senate seats after the 2026 midterm e…
13%
Polymarket
Will the Republican Party hold exactly 48 Senate seats after the 2026 midterm e…
15%
Change ×
Will the Democratic party hold fewer than 45 Senate seats in the 121st Congress?
8%
▼ 1.0pt
Vol $12 today · $1.7K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.