New Zealand First voters were even keener on the parties working together - more than half said yes they should, compared to 35.6 percent saying no.

But Bridges says he still thinks he made the right call.

"Ultimately I had to do what I believe is right," he told Newshub.

Winston Peters refused to be interviewed on Sunday. He had other things to do - including complaining to the cops about the leaks concerning his party and the secretive NZ First Foundation.

His statement says "ongoing media stories using stolen information are designed to skew an even political playing field" and he could "no longer tolerate the mendacious attacks".