The Christian Democratic Union of Germany (, CDU) was an East German political party founded in 1945. It was part of the National Front with the Socialist Unity Party of Germany (SED) and a bloc party until 1989. It contested the free elections in 1990 as an arm of the West German Christian Democratic Union, into which it merged after German reunification later that same year. Party politics The CDU was originally very similar to its West German counterpart. Like the West German CDU, its support came mostly from devout middle class Christians. However, it was a little more left-leaning than the West German CDU. Its first chairman was Andreas Hermes, who had been a prominent member of the Centre Party during the Weimar Republic and a three-time minister. He fled to the West in 1946 and was replaced by Jakob Kaiser, another former Centre Party member and a leading member of the resistance movement during World War II. Kaiser had been a prominent member of the Centre's left wing, and favoured nationalisation of heavy industries and a land distribution programme suggested by the Communists. However, his criticism of the Communists resulted in him being pushed out in 1947 in favour of the more pliant Otto Nuschke, a former member of the German Democratic Party (DDP). Nuschke and his supporters gradually pushed out those CDU members who were not willing to do the Communists' bidding. This culminated at the Sixth Party Congress in 1952, at which it formally transformed itself into a loyal partner of the Communists. At this gathering, it declared itself "a Socialist party without any limitations" in accordance with the new line of "Christian realism". In the 22 "Theses on Christian Realism", the CDU committed itself to the "Socialist reorganisation of Society" (1st edition, 1951). Emphasising the "exemplary realisation" of Karl Marx's "teaching on building a new, better social order" in the USSR, it was declared that Socialism offered at the time "the best opportunity for the realisation of Christ's demands and for exercising the practical Christianity". The programme also asserted the CDU's support for the working class' leading role in establishing socialism, a development which the party regarded from its 6th Congress onward as "historically necessary and consistent". Its deputies, like all other East German parties, consistently voted for the government's proposals in the Volkskammer. The only exception was the vote on 9 March 1972 vote