Muhammad Khan Junejo was the first prime minister in the parliamentary history of the country to receive a vote of confidence from the National Assembly, which he received on March 24, 1985, under General Zia-ul-Haq's Revival of Constitution of 1973 Order (RCO). Under the RCO, the president appoints the prime minister at their discretion and the prime minister must obtain a vote of confidence from the National Assembly within 60 days of their appointment. Under the Eighth Amendment to the Constitution, all prime ministers of Pakistan, from 1985 to 2008, received a vote of confidence from the National Assembly. These included the late Benazir Bhutto, Mian Muhammad Nawaz Sharif, Mir Zafarullah Jamali, Chaudhry Shujaat, Shaukat Aziz, and Yousuf Raza Gilani.