It is established by Government of India under the provisions of the Delimitation Commission Act. The main task of the commission is to redraw the boundaries of the various assembly and Lok Sabha constituencies based on a recent census. The representation from each state is not changed during this exercise. However, the numbers of SC and ST seats in a state are changed in accordance with the census. The Commission is a powerful body whose orders cannot be challenged in a court of law. The orders are laid before the Lok Sabha and the respective State Legislative Assemblies. However, modifications are not permitted. Delimitation commissions have been set up four times in the past – In 1952, 1963, 1973 and 2002 under Delimitation Commission acts of 1952, 1962, 1972 and 2002. The present delimitation of parliamentary constituencies has been done on the basis of 2001 census figures under the provisions of Delimitation Act, 2002. However, the Constitution of India was specifically amended in 2002 not to have delimitation of constituencies till the first census after 2026. Thus, the present Constituencies carved out on the basis of 2001 census shall continue to be in operation till the first census after 2026.