Northern Territory Consolidated Acts38. Spoilt or discarded ballot-papers
(1) On receiving a spoilt ballot-paper or finding or being given a discarded ballot-paper, the presiding officer of a polling place may cancel the ballot-paper.
(2) If a person who has been issued with a ballot-paper satisfies the presiding officer of a polling place that the ballot-paper has been spoilt by mistake or accident, the presiding officer may issue a new ballot-paper to the person.