The returning officer
must use, for the purpose of receiving ballot papers in respect of the
election —
(a) if
the returning officer is appointed under regulation 4(1), the Western
Australian Electoral Commission post office box; or
(b) if
the returning officer is the returning officer by virtue of the operation of
regulation 4(2), the Police Union of Workers of Western Australia post
office box; or
(c) a
private box at a post office, being a private box used exclusively for that
purpose.