Heusinger initially became active in local politics. From 1951 to 1952, he was a member of the council of the Leipzig-Mitte district. From 1952 to 1957, he was a secretary of the Bezirk Leipzig LDPD. From 1953 to 1959, he was a deputy of the Bezirk Leipzig and Bezirk Cottbus district assemblies and a member of the Bezirk government.[1]
From 1955 to 1960, he pursued distance learning at the German Academy for Political Science and Law (DASR) “Walter Ulbricht” in Potsdam, de facto a Marxist-Leninist cadre factory of the SED,[5] earning a degree in law (Dipl.-Jur.). From 1957 to 1959, Heusinger subsequently served as chairman of the Bezirk Cottbus LDPD and as director of the Cottbus Chamber of Industry and Commerce. Since 1957, he additionally was a member of the central board of the LDPD and its political committee.[1][2][3][4]
From 1959 to 1973, he was a secretary of the LDPD central board.[1][3][4]
From 1958 to 1961, he was also a candidate for succession and from 1961, succeeding the deceased Hans Loch, to 1990 a member of the Volkskammer,[1][2] nominally representing a constituency in southern Bezirk Potsdam.[6] Heusinger initially was a member of the legal committee, and from 1963 to 1973 a member of the committee for industry, construction, and transport.[1][2]
The LDP, its new name after being renamed in February 1990, joined forces with the other liberal parties in the GDR to form the Association of Free Democrats (BFD).[14] Heusinger left the BFD in April 1990.[1][2][4]
^ abcdefghiBaumgartner, Gabriele; Hebig, Dieter, eds. (1996). Biographisches Handbuch der SBZ/DDR, 1945-1990 (in German). München : New Providence: K.G. Saur. pp. 315f. ISBN978-3-598-11130-3.