Central Government Act
Section 33(3) in The States Reorganisation Act, 1956
(3) As soon as may be after the commencement of 1[ the Legislative Councils Act, 1957 (37 of 1957 )], the President, after consultation with the Election Commission, shall by order determine--
the constituencies into which the said new State shall be divided for the purpose of elections to the Council under each of the sub- clauses (a), (b) and (c) of clause (3) of article 171;
the extent of each constituency; and
the number of seats allotted to each constituency.