The Democratic Party of Oregon is the Oregon affiliate of the Democratic Party. The State Central Committee, made up of two delegates elected from each of Oregon's 36 counties and one additional delegate for every 15,000 registered Democrats, is the main authoritative body of the party. The party has 17 special group caucuses which also each have representation on the State Central Committee.

The Oregon Legislative Assembly is the state legislature for the U.S. state of Oregon. The Legislative Assembly is bicameral, consisting of an upper and lower house: the Senate, whose 30 members are elected to serve four-year terms; and the House of Representatives, with 60 members elected to two-year terms. There are no term limits for either house in the Legislative Assembly.