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 the Democrats win the South Carolina Senate race in 2026?
18%
– 0.0pt
Vol $34.2K today · $502K total
Possibly the same event, on the other platform
Kalshi
Will the Democratic party win the Senate in 2028?
54%
Kalshi
Will Republicans win the Senate race in Georgia?
34%
Kalshi
Will Democratics win the Senate race in Iowa?
33%
Kalshi
Will Democratics win the Senate race in Ohio?
46%
Kalshi
Will Republicans win the Senate race in Ohio?
54%
Kalshi
Will Democratics win the Senate race in Kansas?
28%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.