Constitution of the Islamic Republic of Pakistan, 1973 — Article 60

60. Chairman and Deputy Chairman..—(1) After the Senate has been duly constituted, it shall, at its first meeting and to the exclusion of any other business, elect from amongst its members a Chairman and a Deputy Chairman and, so often as the office of Chairman or Deputy Chairman becomes vacant, the Senate shall elect another member as Chairman or, as the case may be, Deputy Chairman.

(2)The term of office of the Chairman or Deputy Chairman shall be 3[three] years from the day on which he enters upon his office.