Yes, the Maryland state democratic party platform does include marriage equality.
Democratic Union Party was created in 1947.
Democratic Party - Singapore - was created in 1955.
Primarily Democratic.
Maryland Green Party was created in 2000.
Populist Party of Maryland was created in 2004.
Libertarian Party of Maryland was created in 1971.
Labour Democratic Party was created on 1943-09-08.
British Democratic Party was created in 1979.
Oklahoma Democratic Party was created in 1907.
Democratic Society Party was created in 2005.
Reformist Democratic Party was created in 1920.