Who Will Win Oregon’s 2026 U.S. Senate Race
Oregon voters head to the polls in November 2026 to fill a U.S. Senate seat, with the state’s strong Democratic lean setting the baseline expectation. Democratic incumbency and voter registration advantages have made Oregon reliably blue in recent statewide races, but open-seat contests can still draw competitive primaries and unexpected challengers. Candidate fields are still forming as filing deadlines approach.
Why Markets Are Watching
Senate control nationally often comes down to a handful of competitive seats, and Oregon’s outcome feeds into the broader balance of power in Washington. A surprise result would signal shifting political currents in the Pacific Northwest. The race also matters locally, shaping Oregon’s voice on federal policy for the next six years.
How Prediction Markets Frame the Race
The core question traders are weighing is simply which party, and which individual, ultimately claims the seat. Separate contracts isolate the binary party outcome from the specific-candidate outcome, letting participants express views on both the general partisan lean and on primary dynamics within each party. This structure captures uncertainty at multiple stages of the race, from nomination to general election.
Related terms
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Democratic Party (United States) -
Republican Party (United States) -
United States Senate -
General election -
Primary election -
Oregon -
Jeff Merkley -
Pacific Northwest -
David Brock Smith
Total Volume
$500.9k
Kalshi $23.1k · Polymarket $477.7k
Leading Market
Jeff Merkley
Kalshi 98% · Polymarket 99%
Jeff Merkley Volume
$145.6k
Kalshi $7.9k · Polymarket $137.7k
Jeff Merkley 24h Change
-0.80%
Kalshi -0.80% · Polymarket 0.00%
Calculate Your Potential Return
- Kalshi(opens in a new tab) 7.0% fee
- Polymarket(opens in a new tab) 5.0% fee
| Market | Kalshi Yes | Kalshi Fee | Kalshi Payout | Polymarket Yes | Polymarket Fee | Polymarket Payout |
|---|---|---|---|---|---|---|
| Jeff MerkleyDemocratic Party | 98.3¢ | 7.0% | , trade Jeff Merkley on Kalshi (opens in a new tab) | 99.0¢ | 5% | , trade Jeff Merkley on Polymarket (opens in a new tab) |
| David Brock SmithRepublican Party | 2.1¢ | 7.0% | , trade David Brock Smith on Kalshi (opens in a new tab) | 2.0¢ | 5% | , trade David Brock Smith on Polymarket (opens in a new tab) |
* Estimates if candidate wins. Actual returns may vary.
All Markets
| Market | Total Volume | Kalshi(opens in a new tab) | Polymarket(opens in a new tab) |
|---|---|---|---|
| Jeff MerkleyDemocratic Party | $145,604.20 | ||
| David Brock SmithRepublican Party | $355,266.09 |