Article 324 of Constitution of India "Superintendence, direction and control of elections to be vested in an Election Commission"
(1) The superintendence, direction and control of the
preparation of the electoral rolls for, and the conduct of,
all elections to Parliament and to the Legislature of every
State and of elections to the offices of President and
Vice-President held under this Constitution shall be vested
in a Commission (referred to in this Constitution as the
Election Commission).
(2) The Election Commission shall consist of the Chief
Election Commissioner and such number of other Election
Commissioners, if any, as the President may from time to
time fix and the appointment of the Chief Election
Commissioner and other Election Commissioners shall, subject
to the provisions of any law made in that behalf by
Parliament, be made by the President.
(3) When any other Election Commissioner is so appointed the
Chief Election Commissioner shall act as the Chairman of the
Election Commission.
(4) Before each general election to the House of the People
and to the Legislative Assembly of each State, and before
the first general election and thereafter before each
biennial election to the Legislative Council of each State
having such Council, the President may also appoint after
consultation with the Election Commission such Regional
Commissioners as he may consider necessary to assist the
Election Commission in the performance of the functions
conferred on the Commission by clause (1).
(5) Subject to the provisions of any law made by
Parliament, the conditions of service and tenure of office
of the Election Commissioners and the Regional Commissioners
shall be such as the President may by rule determine;
Provided that the Chief Election Commissioner shall not be
removed from his office except in like manner and on the
like grounds as a Judge of the Supreme Court and the
conditions of service of the Chief Election Commissioner
shall not be varied to his disadvantage after his
appointment:
Provided further that any other Election Commissioner or a
Regional Commissioner shall not be removed from office
except on the recommendation of the Chief Election
Commissioner.
(6) The President, or the Governor of a State, shall, when
so requested by the Election Commission, make available to
the Election Commission or to a Regional Commissioner such
staff as may be necessary for the discharge of the functions
conferred on the Election Commission by clause (1).