On 25 October 1992, Lithuanian voters approved a new constitution, which called for a 141-member unicameral legislature (Seimas) and a popularly elected president. The constitution requires whoever is elected as president to sever his or her formal party ties. All who were permanent residents of Lithuania in November 1989 have been granted the opportunity to become citizens, irrespective of their ethnic origins. Members of the Seimas are elected to four-year terms, and the president is directly elected to a five-year term. The prime minister is appointed by the president; all others ministers are nominated by the prime minister and appointed by the president. All ministerial appointments must be approved by the Seimas. Suffrage is universal at age 18.