A vote is invalid and must not be counted if—
(a) the voting document is received after the date and time specified on the voting document under rule 18(2)(b)(iii); or
(b) the voting document does not, in the opinion of the returning officer, clearly indicate the candidate for whom the voter intended to vote; or
(c) the voter votes for a candidate who has withdrawn from the election; or
(d) the voter votes more than once in the election; or
(e) the returning officer believes, on reasonable grounds, that—
(i) the voting document was not issued to the voter by the returning officer; or
(ii) the voter, at the time of the election, did not meet the criteria for voting in the election specified in section 139AD(2) of the Act.