Northern Territory Consolidated Regulations Northern Territory Consolidated Regulations18. Method of voting
(1) A person's vote on a ballot paper must be marked in accordance with subregulation (2).
(2) The person must:
(a) place the number "1" in the candidate square for the candidate of the person's first preference; and
(b) place consecutive whole numbers in the candidate squares for the other candidates in the order of the person's preference until a sequential preference for all candidates has been shown.