They involve challenge to the validity of the provisions in serted in the Representation of the People Act, 1950 (hereinafter referred to as the '1950 Act ') and the Representation of the People Act, 1951 (hereinafter referred to as the '1951 Act ') by the (10 of 1976) (hereinafter referred to as the '1976 Act ') and the Representation of the People (Amendment) Act, 1980 (Act No. 8 of 1080) (hereinafter referred to as the '1980 Act '), whereby (i) twelve seats out of thirty two seats in the Legislative Assembly of Sikkim have been reserved for Sikkimese of Bhutia Lepcha origin; and (ii) one seat has been reserved for Sanghas and election to the seat reserved for Sanghas is required to be conducted on the basis of a separate electoral roll in which only the Sanghas belonging.