Is it Judith Collins, the veteran rabble-rouser who would shift the party harder to the right? Or Mark Mitchell, the ex-private soldier who fought - and maybe killed - enemies in Iraq?

Perhaps it's Amy Adams, the former Minister of Social Housing, Broadcasting, Communications, Justice and Courts?

Or do you think it's time for Paula Bennett to finally make the leap from deputy to leader? Or could Nikki Kaye do a Jacinda Ardern?

Chris Bishop - could he be the first millennial Prime Minister? Or might you prefer someone with more experience, like Gerry Brownlee or Todd McClay?

Or maybe you're totally fine with Mr Bridges leading National into the 2020 election.

Cast your vote below, and help Mr Bridges know who to watch out for.