The States Reorganisation Act,1956
Section 43. Constitution of Delimitation Commission
(1) As soon as may be after the commencement of this Act, the Central Government shall constitute a Commission to be called the Delimitation Commission which shall consist of three members as follows:-
(a) Two members each of whom shall be a person who is, or has been, Judge of the
Supreme Court or of a High Court, to be appointed by the Central Government; and
(b) The Chief Election Commissioner, ex officio.
(2) The Central Government shall nominate one of the members appointed under clause (a) of sub-section (1) to be the Chairman of the Commission.