The German Democratic Union (DDU) was a left-wing political party. The party was only active in Saarland. The DDU was founded in 1955. The DDU won two seats in the 1960 Saarland state election . Erich Walch and Erwin Gieseking became members of the state parliament.
After the election, the party joined with the German Peace Union . At the 1965 Saarland state election , they failed the re-entry in the state parliament as the state association of the