Usually, the president of the Bundestag is a member of the largest parliamentary group. This custom had emerged already in times of the Weimar Republic, but this is not required by law. The term ends with the election period, and there is no provision for an early removal. The term of the president can only end prematurely if they resign the position, leaves the Bundestag or dies. They can be reelected in the next election period provided they become a member of the Bundestag again.