Article 1- German Reich is a republic. Political authority comes from the people.
Article 22- Reichstag delegates are chosen by all people over 20 by proportional representation.
Article 23- Reichstag elected every 4 years.
Article 41- President is chosen every 7 years by the entire electorate.
Article 48- In an emergency, the president can rule by decree and make laws and keep the chancellor in office without the need for the support of the Reichstag.
Article 54- The Chancellor requires the support of the Reichstag.