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Republican Senate odds by october 31 ↗

Republicans face steep odds in Senate control as election nears: Fortune

Fortune · just now ago
YES 5% 0¢ since publish
Republicans face steep odds in Senate control as election nears: Fortune
Photo: Ruben Reyes / Pexels

A model by data scientist Thomas Miller suggests that Republicans have a 17.1% chance of retaining control of the U.S. Senate, a notable decline from 34.8% in September. Miller’s analysis, spotlighted by Fortune, highlights significant challenges for the Republican Party as the November elections approach. The Democrats need a net gain of four seats to flip the Senate, a scenario that recent polling suggests is increasingly plausible. Current market data reflects this shift, with pricing indicating a low likelihood of Republicans achieving a 40% chance of maintaining control by the end of October.

Key Takeaways

  • Miller’s model indicates a substantial decrease in the probability of Republicans holding the Senate, now at 17.1%.
  • Market pricing suggests a significant decrease in confidence for Republicans reaching a 40% chance of Senate control by October 31.
  • Polling trends in key states like Michigan and Ohio show Democratic candidates leading, consistent with a challenging outlook for Republicans.

What to Watch

Upcoming developments in key Senate races, particularly in Texas and Ohio, could impact market sentiment. New polling data or endorsements may lead to shifts in perceived probabilities. Markets will be closely monitoring any late-breaking news that could alter the landscape, such as a significant change in the generic ballot or unexpected endorsements. The final days before the election will be critical in determining if Republicans can improve their standing.

Republican Senate Odds Hit October 31
Contract Odds Δ since publish Volume 24h
November 1 2026 0.2% — — View market →
November 1 2026 0.3% — — View market →
November 1 2026 0.1% — — View market →
November 1 2026 5.1% — — View market →
Which Tossup Senate States Will Republicans Win Ak Ia Ks Me Mi Oh Tx
Contract Odds Δ since publish Volume 24h
November 2026 1.8% — — View market →
November 2026 0.8% — — View market →
November 2026 0.8% — — View market →
November 2026 1.4% — — View market →
November 2026 0.8% — — View market →
November 3 2026 21.5% — — View market →
November 3 2026 13.5% — — View market →
November 3 2026 1.7% — — View market →
November 3 2026 11.2% — — View market →
November 3 2026 1% — — View market →
November 3 2026 1% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.8% — — View market →
November 3 2026 0.8% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.8% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.7% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.8% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 1% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 1.2% — — View market →
November 3 2026 1.1% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.1% — — View market →
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November 3 2026 0.1% — — View market →
November 3 2026 0.1% — — View market →
November 3 2026 1.4% — — View market →
November 3 2026 1% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 1% — — View market →
November 3 2026 1% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.5% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 0.8% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.4% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 0.2% — — View market →
November 3 2026 1.1% — — View market →
November 3 2026 3.6% — — View market →
November 3 2026 1% — — View market →
November 3 2026 0.9% — — View market →
November 3 2026 1.1% — — View market →
November 3 2026 0.8% — — View market →