This movement reflects a spike in market confidence in a Democratic victory during the midterms. The current 91% chance for the House is the highest point the party has ever reached on the site, according to data updated on September 28.
Tuesday, October 20, 2026
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Democrats Hit Record 91% Odds for House Control on Polymarket
US Politics22 days ago
The probability of a Democratic takeover of the U.S. Senate has reached 63% as prediction markets shift ahead of the November elections. Odds for the party to win control of the House of Representatives on the Polymarket platform have climbed to a record 91%, making Democrats the favorite to secure both chambers of Congress.
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