The Lao People's Democratic Republic (LPDR) was proclaimed on 2 December 1975, abolishing the monarchy and the previous Royal Lao Government. The new constitution was unanimously endorsed by a unicameral 85-member Supreme People's Assembly on 14 August 1991, and amended most recently in 2003. The Supreme People's Assembly was renamed as the National Assembly in 1992. It exercised power according to principle of democratic centralism.