Electoral Act 1992

A person who appears as a witness in a proceeding is not excused from answering a question or producing a document or other thing that the person is required by the Court of Disputed Elections to answer or produce on the ground that the answering of the question or the producing of the document or thing may tend to incriminate the person or on the ground of privilege.

A statement or disclosure made, or a document or other thing produced, by a person in the course of a proceeding, or any information, document or other thing obtained as a direct or indirect consequence of the making of the statement or disclosure, or of the production of the firstmentioned document or thing, is not admissible in evidence in any civil or criminal proceeding except—

a proceeding before the Court of Disputed Elections; or

a proceeding for an offence relating to the giving of false evidence.