26. A ballot paper must be rejected if it(1) has not been completed in accordance with this Regulation;
(2) has not been signed by the employee, or the signature does not correspond to the signature appearing on the photocopy of the document attached by the employee under section 14;
(3) was not provided by the Commission;
(4) is not in the return envelope;
(5) designates more than one association or none;
(6) has been marked elsewhere than in one of the places designed for that purpose;
(7) bears a fanciful or injurious marking;
(8) is not accompanied by a valid identification document provided for in section 14;
(9) includes a photocopy of the valid identification document provided for in section 14 that does not enable to clearly see the particulars and the employee’s photograph and signature, in contravention of the third paragraph of that section.