The main members were Hermann Brill of the Social Democratic Party (SPD) as chairman, Dr. Werner Hilpert from the Zentrumspartei, later the Christian Democratic Union (CDU), Ernst Thape from the SPD and Walter Wolf of the Communist Party (KPD).
On the 14 December Fink joined the CSU in protest against a merger between the Bayernpartei and the Zentrumspartei.