Democrats lost one senate seat in the 2022 Oregon State Senate election, resulting in a 17–13 majority, and lost two seats in the 2022 Oregon House of Representatives election, resulting in a 35–25 majority.

Senate President: Rob Wagner (D-19 Lake Oswego) President Pro Tempore: James Manning Jr. (D–7 Eugene) Majority Leader: Kate Lieber (D-14 Beaverton) until July 15, 2024; Kathleen Taylor (D-21 Portland) after[2] Minority Leader: Tim Knopp (R-27 Bend) until April 15, 2024; Daniel Bonham (R-26 The Dalles) after[3] To prevent passage of bills related to abortion and gun control by the Democratic majority, ten Republican senators took advantage of the quorum requirement in the Oregon Constitution that requires two-thirds of senators be present and did not attend sessions for six weeks, preventing any Senate business from occurring.

[6] This action triggered Oregon Ballot Measure 113, passed by voters in 2022, which disqualifies members with ten unexcused absences from serving in the legislature following their current term.

[7] The Democratic leadership eventually made concessions to the bills to allow the session to resume.

[1][9] Speaker: Dan Rayfield (D-16 Corvallis) until March 7, 2024; Julie Fahey (D-14 Eugene) after[10] Speaker Pro Tempore: Paul Holvey (D-8 Eugene) Majority Leader: Julie Fahey (D-14 Eugene) until March 21, 2024; Ben Bowman (D-25 Tigard) after[11] Minority Leader: Vikki Breese-Iverson (R-59 Prineville) until September 26, 2023; Jeff Helfrich (R-52 Hood River) after[12]