An Institutional Act shall determine the term for which each House is elected, the number of its members, their allowances, the conditions of eligibility and the terms of disqualification and of incompatibility with membership.

It shall likewise determine the manner of election of those persons called upon to replace Members of the National Assembly or Senators whose seats have become vacant, until the general or partial renewal by election of the House in which they sat, or have been temporarily replaced on account of having accepted a governmental position.

An independent commission, whose composition and rules of organization and operation shall be set down by statute, shall express an opinion, by public announcement, on the Government and Private Members' Bills defining the constituencies for the election of members of the National Assembly, or modifying the distribution of the seats of members of the National Assembly or of Senators.