Constitution of India, 1949
232.Reservation of seats for Scheduled Castes and Scheduled Tribes in the Legislative Assemblies of the States.-
(1) Seats shall be reserved for the Scheduled Castes and the Scheduled Tribes, [except the Scheduled Tribes in the tribal areas of Assam, in Nagaland and in Meghalaya], in the Legislative Assembly of every State.
(2) Seats shall be reserved also for the autonomous districts in the Legislative Assembly of the State of Assam.
(3) The number of seats reserved for the Scheduled Castes or the Scheduled Tribes in the Legislative Assembly nearly as may be, the same proportion to the ‘total number of seats in the Assembly as the population of the Scheduled Castes in the State or of the Scheduled Tribes in the State or part of the State, as the case may be, in respect of which seats are so reserved bears to the total population of the State.
(4) The number of seats reserved for an autonomous district in the legislative Assembly of the State of Assam shall bear to the total number of seats in that Assembly a proportion not less than the population of the district bears to the total population of the State.
(5) The constituencies for the seats reserved for any autonomous district of Assam shall not comprise any area outside that district.
(6) No person who is not a member of a Scheduled Tribe of any autonomous district of the State of Assam shall be eligible for election to the Legislative Assembly of the State from any constituency of that district.