Photo: RNZ
The Green Party's Marama Davidson, New Zealand First's Winston Peters, ACT's David Seymour and the Māori Party's John Tamihere took part in the event.
It's been a busy week of debates, including the leaders debate between Jacinda Ardern and Judith Collins last night, and a young leaders debate earlier in the week.
It's Peters' first debate for the election campaign, while the others have taken part in electorate debates.
Read how it unfolded here: