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.

Ronald Lee Wyden is an American politician serving as the senior United States senator from Oregon, a seat he has held since 1996. A member of the Democratic Party, he served in the United States House of Representatives from 1981 until 1996. He is the dean of Oregon's congressional delegation and chairs the Senate Finance Committee.