Yes, the state democratic party platform for Oregon does include marriage equality.
Democratic Power
Democratic Union Party was created in 1947.
Democratic Party - Singapore - was created in 1955.
Oregon Progressive Party was created in 2007.
Oregon Republican Party was created in 1859.
Constitution Party of Oregon was created in 2000.
Labour Democratic Party was created on 1943-09-08.
The Oregon House of Representatives is evenly split between Republican and Democratic Parties. The Oregon State Senate has a Democratic majority.
Party for Democratic Prosperity was created in 1990.
Sandžak Democratic Party was created in 1995.
Saguan Democratic Party was created in 1899.