A view Stuart Nash has gained nothing from leaking government information.

It's emerged the Napier MP emailed donors about private Cabinet information around a 2020 rent relief package.

Nash had already received two strikes for past transgressions, which led him to resign as Police Minister.

Peter Dunne, who's served in cabinets in both Labour and National governments, told Mike Hosking there's no suggestion the leak gained him any advantage.

He says Nash has ruined his career because he likes to brag and skite.