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 party 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 state election in 1965 they failed the re-entry in the state parliament as the state association of the DFU.
References
German Democratic Union Wikipedia(Text) CC BY-SA