Section 17(1)(d) in The Delhi Municipal Corporation Act, 1957
(d)that the result of the election, in so far as it concerns a returned candidate, has been materially affected—(i)by the improper acceptance of any nomination, or(ii)by any corrupt practice committed in the interests of the returned candidate by a person other than that candidate or his agent or a person acting with the consent of such candidate or agent, or(iii)by the improper acceptance or refusal of any vote or reception of any vote which is void, or(iv)by the non-compliance with the provisions of this Act or of any rules or orders made thereunder, the court shall declare the election of the return candidate to be void.