 Thus a coalition between the Social Democratic Party of Germany (SPD – "Sozialdemokratische Partei Deutschlands") and the Independent Social Democratic Party of Germany (USPD – "Unabhängige Sozialdemokratische Partei Deutschlands") made up the council.Until 29 December 1918 there were three members from the SPD (Friedrich Ebert, Philipp Scheidemann, Otto Landsberg) and three from the USPD (Hugo Haase, Wilhelm Dittmann, Emil Barth).Ebert and Haase were joint chairmen.