Mongolia's first multi-party elections for the People's Great Khural (Upper Chamber of the Parliament) were held on 29 July 1990. The MPRP won 85% of the seats. The People's Great Khural first commenced on 3 September and elected a president (MPRP), a vice-president (SDP, Social Democratic Party), a prime minister (MPRP), and 50 members to the Baga Khural (Lower Chamber of the Parliament). The vice president was also the speaker of the Baga Khural. In November 1991, the People's Great Khural began discussion on a new constitution and adopted it on 13 January 1992. The Constitution entered into force on 12 February 1992. In addition to establishing Mongolia as an independent, sovereign republic and guaranteeing a number of rights and freedoms, the new constitution restructured the legislative branch of government, creating a unicameral legislature, the State Great Khural, with 76 members.