Incumbent Democratic Senator Jeff Merkley's bid for a fourth term anchors trader consensus at 93% for the Democratic nominee in Oregon's U.S. Senate race, reflecting the state's strong partisan lean—Kamala Harris won by 14 points in 2024—and historical precedent with no Republican Senate victory since 2002. Recent GOP primary filings by March 10 deadline, including state Sen. David Brock Smith and perennial candidate Jo Rae Perkins, have fragmented the Republican field without elevating a credible challenger, as Merkley boasts over $5.9 million cash on hand. The May 19 primary looms, but ratings from Cook Political Report and Sabato's Crystal Ball deem the seat Safe Democratic. A Merkley scandal, health issue, or national Republican wave could challenge this, though structural barriers persist.
Experimental AI-generated summary referencing Polymarket data · Updated
Democrat
93%

Republican
7%

Democrat
93%

Republican
7%
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 Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Market Opened: Oct 13, 2025, 5:04 PM ET
Resolver
0x2F5e3684c...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 Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Resolver
0x2F5e3684c...Incumbent Democratic Senator Jeff Merkley's bid for a fourth term anchors trader consensus at 93% for the Democratic nominee in Oregon's U.S. Senate race, reflecting the state's strong partisan lean—Kamala Harris won by 14 points in 2024—and historical precedent with no Republican Senate victory since 2002. Recent GOP primary filings by March 10 deadline, including state Sen. David Brock Smith and perennial candidate Jo Rae Perkins, have fragmented the Republican field without elevating a credible challenger, as Merkley boasts over $5.9 million cash on hand. The May 19 primary looms, but ratings from Cook Political Report and Sabato's Crystal Ball deem the seat Safe Democratic. A Merkley scandal, health issue, or national Republican wave could challenge this, though structural barriers persist.
Experimental AI-generated summary referencing Polymarket data · Updated



Beware of external links.
Beware of external links.
Frequently Asked Questions