What my esteemed colleague is trying to say is that, while in 20th century earth events transpired to bring the office of the Fuehrer about, events in Disco have done anything but.
Rheinland needed a strong ruler, and the Chancellor was exactly that. He tried (and is still trying) through iron-fisted rule, to bring Rheinland back from the devastation of both the 80 Years War and the Nomad War.
The office of the President of the Reichstag has probably been absorbed (if created at all) into the Chancellor's job description too. It's fairly totalitarian there from my experiences.