Iraq

The federal legislative power shall consist of the Council of Representatives and the Federation Council. (Art. 48)

First: The Council of Representatives shall consist of a number of members, at a ratio of one seat per 100,000 Iraqi persons representing the entire Iraqi people. They shall be elected through a direct secret general ballot. The representation of all components of the people shall be upheld in it.
Second: A candidate to the Council of Representatives must be a fully qualified Iraqi.
Third: A law shall regulate the requirements for the candidate, the voter, and all that is related to the elections.
Fourth: The elections law shall aim to achieve a percentage of representation for women of not less than one-quarter of the members of the Council of Representatives.
… (Art. 49)

A legislative council shall be established named the “Federation Council,” to include representatives from the regions and the governorates that are not organized in a region. A law, enacted by a two-thirds majority of the members of the Council of Representatives, shall regulate the formation of the Federation Council, its membership conditions, its competencies, and all that is connected with it. (Art. 65)