The elections to the House of the People and to the Legislative Assembly of every State shall be on the basis of adult suffrage; that is to say, every person who is a citizen of India and who is not less thaneighteen years of age on such date as may be fixed in that behalf by or under any law made by the appropriate Legislature and is not otherwise disqualified under this Constitution or any law made by the appropriate Legislature on the ground of non-residence, unsoundness of mind, crime or corrupt or illegal practice, shall be entitled to be registered as a voter at any such election.[Editroial comment-The Constitution (Sixty-first Amendment) Act, 1988, reduced the voting age for elections for Indian citizens from 21 years to 18 years. The voting age for an Indian citizen was decided as 21 years on the basis of adult suffrage. In simple words, any person below the age of 21 was not allowed to cast a vote in the elections for the Lok Sabha and the Legislative Assembly of each State. With the introduction of this Amendment, a chance was given to unrepresented youths to express their views and emotions out in the open, thus inspiring them to participate in the political process.Also Refer]
