12. On the tenth day before polling day and in accordance with section 204 of the Act, the returning officer delivers to the deputy returning officer of the postal polling station all the materials needed by the latter to perform duties, including a copy of the revised list of electors and a copy of the list of the electors registered to vote by mail.
The opening in the ballot box must be such that the envelopes containing the ballot papers may be inserted but cannot be withdrawn before the ballot box is opened.