CHAPTER IV: THE DIET
The Diet shall be the highest organ of the state power, and shall be the sole law-making organ of the State.
The Diet shall consist of two Houses, namely the House of Representatives and the House of Councillors.
1)Both Houses shall consist of elected members, representative of all the people.
2)The number of the members of each House shall be fixed by law.
The qualifications of members of both Houses and their electors shall be fixed by law. However, there shall be no discrimination because of race, creed, sex, social status, family origin, education, property or income.
The term of office of members of the House of Representatives shall be four years. However, the term shall be terminated before the full term is up in case the House of Representatives is dissolved.
The term of office of members of the House of Councillors shall be six years, and election for half the members shall take place every three years.
Electoral districts, method of voting and other matters pertaining to the method of election of members of both Houses shall be fixed by law.
No person shall be permitted to be a member of both Houses simultaneously.
Members of both Houses shall receive appropriate annual payment from the national treasury in accordance with law.
Except in cases as provided for by law, members of both Houses shall be exempt from apprehension while the Diet is in session, and any members apprehended before the opening of the session shall be freed during the term of the session upon demand of the House.
Members of both Houses shall not be held liable outside the House for speeches, debates or votes cast inside the House.
An ordinary session of the Diet shall be convoked once per year.
The Cabinet may determine to convoke extraordinary sessions of the Diet. When a quarter or more of the total members of either House makes the demand, the Cabinet must determine on such convocation.
1)When the House of Representatives is dissolved, there must be a general election of members of the House of Representatives within 40 days from the date of dissolution, and the Diet must be convoked within 30 days from the date of the election.
2)When the House of Representatives is dissolved, the House of Councillors is closed at the same time. However, the Cabinet may, in time of national emergency, convoke the House of Councillors in emergency session.
3)Measures taken at such session as mentioned in the proviso of the preceding paragraph shall be provisional and shall become null and void unless agreed to by the House of Representatives within a period of 10 days after the opening of the next session of the Diet.
Each House shall judge disputes related to qualifications of its members. However, in order to deny a seat to any member, it is necessary to pass a resolution by a majority of two-thirds or more of the members present.