Yes, the state democratic party platform for Oregon does include marriage equality.
Democratic Power
Democratic Party - Singapore - was created in 1955.
Democratic Union Party was created in 1947.
Constitution Party of Oregon was created in 2000.
Oregon Progressive Party was created in 2007.
Oregon Republican Party was created in 1859.
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.
Lithuanian Democratic Party was created in 1902.
Women's Democratic Party was created in 2004.
Democratic Party - Burma - was created in 2010.