Incumbent U.S. Senator Jeff Merkley's 99.6% implied probability in the Oregon Democratic Senate primary reflects his entrenched position as a three-term senator with $6.5 million cash on hand as of late March, dwarfing challenger Paul Damian Wells' zero fundraising and name recognition. Ballots for the closed May 19 all-mail primary began mailing April 29, but no polls exist, and endorsements from groups like the Oregon AFL-CIO bolster Merkley amid a quiet race with no recent catalysts. Jacob Ryan withdrew earlier, leaving negligible competition. While late-breaking scandal, health issues, or protest voting could theoretically shift odds, historical incumbent primary win rates exceed 95% in safe states like Oregon.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$18,101 Vol.
$18,101 Vol.
Jeff Merkley
100%
Jacob Ryan
<1%
$18,101 Vol.
$18,101 Vol.
Jeff Merkley
100%
Jacob Ryan
<1%
If no 2026 Oregon Democratic Senate Primary takes place, this market will resolve to "Other".
The resolution source for this market will be the first announcement of the results from the Oregon Democratic party, however an overwhelming consensus of credible reporting may suffice.
Market Opened: Nov 26, 2025, 5:20 PM ET
Resolver
0x2F5e3684c...If no 2026 Oregon Democratic Senate Primary takes place, this market will resolve to "Other".
The resolution source for this market will be the first announcement of the results from the Oregon Democratic party, however an overwhelming consensus of credible reporting may suffice.
Resolver
0x2F5e3684c...Incumbent U.S. Senator Jeff Merkley's 99.6% implied probability in the Oregon Democratic Senate primary reflects his entrenched position as a three-term senator with $6.5 million cash on hand as of late March, dwarfing challenger Paul Damian Wells' zero fundraising and name recognition. Ballots for the closed May 19 all-mail primary began mailing April 29, but no polls exist, and endorsements from groups like the Oregon AFL-CIO bolster Merkley amid a quiet race with no recent catalysts. Jacob Ryan withdrew earlier, leaving negligible competition. While late-breaking scandal, health issues, or protest voting could theoretically shift odds, historical incumbent primary win rates exceed 95% in safe states like Oregon.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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