(1) Where an advance vote qualifies for consideration a mark is put down against the name of the voter in the electoral register to indicate that the voter has cast an advance vote. If, besides the covering letter, the cover contains only one envelope for either election, an additional mark shall be put down to indicate for which election the voter has cast his or her advance vote. The unopened envelope and the covering letter are replaced under the cover and retained until the voting is over. The covers are then removed from the envelopes and put into one of the ballot boxes designated for ballot papers in the appropriate election. The envelopes shall not be opened until the votes are counted.
(2) Where an advance vote does not qualify for consideration, the cause must be written on the cover and the unopened envelope and the covering letter be replaced under the cover.
(3) Advance votes received by the polling supervisors after the voting starts shall be marked by the time of their reception and shall not be considered.