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 Republican Party win the NC-09 House seat?
68%
– 0.5pt
Vol $20.6K today · $55K total
Possibly the same event, on the other platform
Kalshi
Will the Republican party win the House in 2028?
27%
Kalshi
Will the Republican party win the House, the Republican party win the Senate, a…
15%
Kalshi
Will the Republican party win the House, the Democratic party win the Senate, a…
3%
Kalshi
Will the Democratic party win the House, the Democratic party win the Senate, a…
3%
Kalshi
Will the Republican party win the Senate in 2028?
45%
Kalshi
Will the Democratic party win the House in 2028?
72%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.