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
Polymarket
Will the Republicans win the Texas Senate race in 2026?
37%
Polymarket
Will the Republicans win the Michigan Senate race in 2026?
30%
Polymarket
Will the Democrats win the Texas Senate race in 2026?
64%
Polymarket
Will the Democrats win the Michigan Senate race in 2026?
71%
Polymarket
Will the Republican Party control the Senate after the 2026 Midterm elections?
33%
Polymarket
Will J.D. Vance win the 2028 Republican presidential nomination?
44%
Change ×
Will Republicans win the Senate race in South Carolina?
81%
– 0.5pt
Vol $21 today · $5.5K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.