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Will the Republicans win the Colorado Senate race in 2026?

7.8%
Consensus Probability (Model A — Inverse-Variance Log-Odds)
3 platforms · 0pp spread · $27K

Across 3 prediction market platforms, "Will the Republicans win the Colorado Senate race in 2026?" has a consensus probability of 7.8%. Predictit: 4.0%, Polymarket: 9.0%, Manifold: 7.8%. Consensus via geometric mean of odds (Satopaa et al., 2014), validated by IARPA ACE tournament.

Platform Comparison — white line = consensus
Predictit
View →
4%
Polymarket
View →
9%
$27K
Manifold
View →
8%
9 traders
Probability Over Time
All 4 Consensus Models
Market Details
Predictit
Updated 3h ago
Volume
Liquidity
Bid / Ask
— / —
Spread
Opened
Apr 2026
Resolves
Polymarket
Updated 26d ago
Volume
$27K
Liquidity
$12K
Bid / Ask
8.0% / 10.0%
Spread
2.0%
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 3 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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