21.—(1) An elector or a proxy voter who is shown in the postal voters list or proxy postal voters list may request, at any time before the close of the poll, that the CRO confirm—
(a)whether a mark is shown in the marked copy of the postal voters list or proxy postal voters list in a place corresponding to the number of the elector to denote that a postal vote or votes have been returned; and
(b)whether the number of the ballot paper or papers issued to the elector or the elector’s proxy have been recorded on either of the lists of rejected votes kept by the CRO under sub-paragraphs (2) and (3) of paragraph 25.
(2) The CRO shall establish whether any such request has been made by the elector or their proxy, and if it is so established shall provide confirmation of the matters specified in sub-paragraph (1).