Northern Territory Consolidated Acts Northern Territory Consolidated Acts41. Marking of ballot-papers
(1) A person issued with a ballot-paper must indicate his or her vote -
(a) if the elector intends to vote in favour of the question - by writing the word "yes" in the space provided on the ballot-paper; or
(b) if the elector intends to vote against the question - by writing the word "no" in the space provided on the ballot-paper.
(2) Subject to this Act, a person must not write on or mark a ballot-paper other than a ballot-paper issued to the person.
Penalty: $500.