Given the Weimar Republic's collapse into dictatorship, its political historiography has stressed its many failures. To that pattern the Catholic Center Party, or Zentrum, which participated in all of the Republic's cabinets but one, has been no exception. Programmatically vague, the party was subject to bitter divisions between an authoritarian monarchist right and a vocal republican left. This trend was already obvious after the June 1920 Reichstag elections in which the party lost four million votes, mostly from the Catholic working class. Thereafter the Center remained unable to extend its appeal beyond a fixed, socially conservative base. Accordingly, the Center's record, culminating in the controversial chancellorship of Heinrich Brüning, has been presented as one replete with failure, if not desperation.