You can register with a political party.
Political Parties in Oregon
Major political parties in Oregon include the Democratic and Republican parties. Statewide minor political parties include the Constitution, Independent, Libertarian, Pacific Green, Progressive, and Working Families parties.
More detailed information, including officers, can be found at the Oregon Secretary of State’s website.
Portland, OR 97232
25375 SW Parkway Ave.
9220 SW Barbur Blvd, Suite 119-254
Portland, OR 97219
Wilsonville, OR 97070
Eugene, OR 97440