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Will the Republican Party control the Senate after the 2026 Midterm elections?

46.5%
Consensus Probability (Model B — Geometric Mean of Odds)
1 platforms · 0pp spread · $801K

Across 1 prediction market platform, "Will the Republican Party control the Senate after the 2026 Midterm elections?" has a consensus probability of 46.5%. Polymarket: 46.5%. Consensus via geometric mean of odds (Satopaa et al., 2014), validated by IARPA ACE tournament.

Platform Comparison — white line = consensus
Polymarket
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46%
$801K
Probability Over Time
Market Details
Polymarket
Updated 42m ago
Volume
$801K
Liquidity
$202K
Bid / Ask
46.0% / 47.0%
Spread
1.0%
Opened
Apr 2026
Resolves
Nov 2026
This market will resolve according to the party that controls the Senate following the 2026 U.S. Senate elections scheduled for November 3, 2026. Senate control is defined as having more than half of the voting Senate members, or half of the voting Senate members and the Vice Pr…

About This Consensus

Computed from 1 platform using geometric mean of odds (Satopaa et al., 2014). This method was validated by the IARPA ACE forecasting tournament as the most accurate probability aggregation technique. Full methodology →

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