After the war Goedhart became more politically active and sought a reform of the political system in which he tried to use "Het Parool" as a political vehicle. He became member of the House of Representatives for the Labour Party (PvdA) in 1946 and would stay member until the early 1970s. In the House he developed himself as a supporter of Indonesian independence of the Netherlands and became a staunch supporter of anti-communism. Goedhart became a conflictual figure, clashing both at his newspaper and with his party members.