You'd have to look at some of the precise exemptions in the Privacy Act. There are certain provisions in section 8 concerning disclosures of government data to members of Parliament in their capacities as members of Parliament, so that is relevant to the question you asked, but there is a gap. I support what the Privacy Commissioner has said in extending the Privacy Act to those offices. It shouldn't be controversial.
On September 27th, 2016. See this statement in context.