After Scheidemann's cabinet resigned in June 1919 in protest over the stipulations of the Treaty of Versailles, a new government was formed by Gustav Bauer (SPD) and David became "Reichsminister des Innern" (Minister of the Interior), a position he held from 21 June to 4 October 1919. In early October, the German Democratic Party (DDP) which had left the coalition government in June rejoined, thus reestablishing the Weimar Coalition of SPD, DDP and Zentrum. Erich Koch-Weser (DDP) took over as Minister of the Interior and David once again was Minister without Portfolio. He retained this position in the first cabinet of Hermann Müller, who formed the new government when the Cabinet Bauer resigned in March 1920.