2020Flipped from RepublicanFinal resultsSpecial election
2020 special election for Oregon Senate District 10
Oregon State Senate · Oregon
Deb Patterson (D) won with 48.5% of the vote, defeating Denyc Boles (R) by 0.7 points, flipping a seat Republicans held.
Deb PattersonDemocrat · winner
48.5%37,725
Denyc BolesRepublican
47.8%37,149
Taylor A RickeyOther party
3.6%2,775
77,794 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
The seat's recent races
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)