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 number of days Trump's next White House Press Secretary serves be at l…
84%
Kalshi
Will Kari Lake be the next White House Press Secretary before Jan 20, 2029?
2%
Kalshi
Will Maria Bartiromo be the next White House Press Secretary before Jan 20, 202…
2%
Kalshi
Will Anna Kelly be the next White House Press Secretary before Jan 20, 2029?
16%
Kalshi
Will Tricia McLaughlin be the next White House Press Secretary before Jan 20, 2…
4%
Kalshi
Will Scott Jennings be the next White House Press Secretary before Jan 20, 2029?
15%
Change ×
Next White House Press Secretary announced by November 30, 2026?
53%
▼ 10.0pt
Vol $77.8K today · $138.3K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.