The deputies shall be elected by universal, equal, direct, and secret suffrage by those of either sex over twenty years of age, on the principles of proportional representation. The day of the election must be a Sunday or public holiday. An electoral law of the Realm shall lay down further detailed regulations. ARTICLE 23. The Reichstag shall be elected for four years. New elections must take place at latest within sixty days after the expiration of its term of office. The Reichstag must hold its first meeting at latest on the thirtieth day after election. ARTICLE 24. The Reichstag shall meet on the first Wednesday of November in every year at the seat of the Government. The President of the Reichstag is bound to call it together at an earlier date if the President of the Realm, or at least one-third of the deputies, demand it. The Reichstag determines the date of the close of its session and the date of its reassembly. ARTICLE 25.[20] The President of the Realm has power to dissolve the Reichstag, but may only do so once on the same ground. New elections must be held at latest on the sixtieth day after the dissolution. ARTICLE 26. The Reichstag shall choose its own President, Vice-President, and Secretaries. It shall regulate its own procedure. ARTICLE 27. The business of the House between two sessions or between two election periods shall be conducted by the President of the Reichstag and the Vice-President holding office during the preceding session. ARTICLE 28. Disciplinary and police powers within the Reichstag building pertain to the President of the Reichstag. He also has the administration of the House. He has control of the income and expenditure of the House within the limits laid down by the national budget, and he represents the House in all the legal proceedings and legal business involved in its administration. ARTICLE 29. The sittings of the Reichstag are public. The public may be excluded on the demand of fifty deputies and by a two-thirds majority vote. ARTICLE 30. True reports of the proceedings at the public sittings of the Reichstag, of the proceedings at a Landtag, of the proceedings at Committees of the Reichstag or Landtag, are privileged matter. ARTICLE 31. A Court of Inquiry into election proceedings shall be formed in connection with the Reichstag. Such Court shall also decide whether any deputy has forfeited his mandate. The Court of Inquiry into election proceedings shall be formed of members of the Reichstag, who shall be elected by the Reichstag for the duration of the electoral period, and further of members of the Supreme Administrative Court, who shall be nominated by the President of the Realm on the suggestion of the Presiding officers of this Court. The Court of Inquiry into election proceedings shall pronounce judgment in public and oral session through three members of the Reichstag, and two legal members.