88. An elector shall vote by secret ballot. Before giving a ballot paper to any person qualified to vote at the poll, the presiding officer shall write, on the back of the ballot paper, his initials and on the back of the counterfoil of such ballot paper, the same number as he has written opposite the voter’s name in the poll book in such a way that when the ballot paper is folded, those initials and that number remain visible.
The presiding officer shall instruct the voter on how to mark and fold his ballot paper but without inquiring about his voting intentions, except in the cases provided in section 90.