Rejection of ballots
(1) Each pair of special ballot officers shall, on examining a special ballot, reject it if
a) it has not been supplied by the Chief Electoral Officer;
b) it is not marked;
c) it is marked with a name other than the name of a candidate;
d) it is marked with the names of more than one candidate; or
e) there is any writing or mark on it by which the elector could be identified.