51. Ballot boxes to remain closed during poll - (1) The Presiding Officer shall, before the opening of the poll, and in the sight of any of the scrutineers present -
(a) ensure that the ballot box is empty; and
(b) close the ballot box; and
(c) ensure that the ballot box is sealed or locked in such a manner as to prevent it being opened without breaking the seal or lock.
(2) The ballot box, after being sealed or locked in accordance with subsection (1) shall not again be opened until after the close of the poll.