Hartmut BüttnerHartmut Büttner is a German politician of the Christian Democratic Union and former member of the German Bundestag.LifeIn 1969 Büttner joined the Junge Union and in 1971 the CDU. From 1980 to 1983 he was state chairman of the Junge Union of Lower Saxony. Büttner was a member of the German Bundestag for four terms from 20 December 1990. He twice won a direct mandate in his constituency and was twice elected to parliament on the state list of Saxony-Anhalt.