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Will the Democrats win the Colorado Senate race in 2026?

95.4%
Consensus Probability (Model B — Geometric Mean of Odds)
2 platforms · 3pp spread · $4K

Across 2 prediction market platforms, "Will the Democrats win the Colorado Senate race in 2026?" has a consensus probability of 95.4%. Polymarket: 93.5%, Manifold: 96.7%. 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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94%
$4K
Manifold
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97%
9 traders
Probability Over Time
All 6 Consensus Models
Market Details
Polymarket
Updated 5m ago
Volume
$4K
Liquidity
$30K
Bid / Ask
92.0% / 95.0%
Spread
3.0%
Opened
Apr 2026
Resolves
This market will resolve according to the winner of the 2026 midterm Colorado 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 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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