Article 55 of Constitution of India "Manner of election of President"
(1) As far as practicable, there shall be uniformity in
the scale of representation of the different States at the
election of the President.
(2) For the purpose of securing such uniformity among the
States inter se as well as parity between the States as a
whole and the Union, the number of votes which each elected
member of Parliament and of the Legislative Assembly of each
State is entitled to cast at such election shall be
determined in the following manner:-
(a) every elected member of the Legislative Assembly of a
State shall have as many votes as there are multiples of one
thousand in the quotient obtained by dividing the population
of the State by the total number of the elected members of
the Assembly;
(b) if, after taking the said multiples of one thousand, the
remainder is not less than five hundred, then the vote of
each member referred to in sub-clause (a) shall be further
increased by one;
(c) each elected member of either House of Parliament shall
have such number of votes as may be obtained by dividing the
total number of votes assigned to the members of the
Legislative Assemblies of the States under sub-clause (a)
and (b) by the total number of the elected members of both
Houses of Parliament, fractions exceeding one-half being
counted as one and other fractions being disregarded.
(3) The election of the President shall be held in
accordance with the system of proportional representation by
means of the single transferable vote and the voting at such
election shall be by secret ballot.
Explanation.- In this Article, the expression "population"
means the population ascertained at the last preceding
census of which the relevant figures have been published:
Provided that the reference in this Explanation to the last
preceding census of which the relevant figures have been
published shall, until the relevant figures for the first
census taken after the year 2000 have been published, be
construed as a reference to the 1971 census.
Article 56 of Constitution of India "Term of office of President"
(1) The President shall hold office for a term of five years
from the date on which he enters upon his office:
Provided that -
(a) the President may, by writing under his hand addressed
to the Vice-President, resign his office;
(b) the President may, for violation of the constitution, be
removed from office by impeachment in the manner provided in
Article 61:
(c) the President shall, notwithstanding the expiration of
his term, continue to hold office until his successor enters
upon his office.
(2) Any resignation addressed to the Vice-President under
clause (a) of the proviso to clause (1) shall forthwith be
communicated by him to the Speaker of the House of the
People
Article 57 of Constitution of India "Eligibility for re-election"
A person who holds, or who has held, office as President shall, subject to the other provisions of this Constitution, be eligible for re-election to that office.
What are the Fundamental duties? Article 51A of Constitution of India, 1949