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Will the Democrats win the Oregon Senate race in 2026?

96.1%
Consensus Probability (Model B — Geometric Mean of Odds)
2 platforms · 5pp spread · $1K

Across 2 prediction market platforms, "Will the Democrats win the Oregon Senate race in 2026?" has a consensus probability of 96.1%. Polymarket: 92.5%, Predictit: 98.0%. Consensus via geometric mean of odds (Satopaa et al., 2014), validated by IARPA ACE tournament.

Platform Comparison — white line = consensus
Polymarket
View →
92%
$1K
Predictit
View →
98%
Probability Over Time
All 6 Consensus Models
Market Details
Polymarket
Updated 5h ago
Volume
$1K
Liquidity
$27K
Bid / Ask
92.0% / 93.0%
Spread
1.0%
Opened
Apr 2026
Resolves
This market will resolve according to the winner of the 2026 midterm Oregon 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 Democr…
Predictit
Updated 21d ago
Volume
Liquidity
Bid / Ask
— / —
Spread
Opened
Apr 2026
Resolves

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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