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Will the Republicans win the Michigan Senate race in 2026?

18.1%
Consensus Probability (Model B — Geometric Mean of Odds)
2 platforms · 4pp spread · $24K

Across 2 prediction market platforms, "Will the Republicans win the Michigan Senate race in 2026?" has a consensus probability of 18.1%. Polymarket: 16.0%, Manifold: 20.3%. 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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16%
$24K
Manifold
View →
20%
8 traders
Probability Over Time
All 6 Consensus Models
Market Details
Polymarket
Updated 1h ago
Volume
$24K
Liquidity
$37K
Bid / Ask
15.0% / 17.0%
Spread
2.0%
Opened
Apr 2026
Resolves
This market will resolve according to the winner of the 2026 midterm Michigan U.S. Senate election, inclusive of any run-offs. A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Demo…
Manifold
Updated 5h ago
Volume
Liquidity
Bid / Ask
— / —
Spread
Opened
Apr 2026
Resolves
Nov 2026

About This Consensus

Computed from 2 platforms 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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