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Will the Democrats win the Maine Senate race in 2026?

73.3%
Consensus Probability (Model B — Geometric Mean of Odds)
2 platforms · 7pp spread · $33K

Across 2 prediction market platforms, "Will the Democrats win the Maine Senate race in 2026?" has a consensus probability of 73.3%. Polymarket: 76.5%, Manifold: 69.9%. 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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76%
$33K
Manifold
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70%
13 traders
Probability Over Time
All 6 Consensus Models
Market Details
Polymarket
Updated 3h ago
Volume
$33K
Liquidity
$12K
Bid / Ask
76.0% / 77.0%
Spread
1.0%
Opened
Apr 2026
Resolves
This market will resolve according to the winner of the 2026 midterm Maine 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 Democra…
Manifold
Updated 3h 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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