Political commentator and former Labour MP John Tamihere says while Christopher Luxon comes across as a "decent bloke" he believes he is still struggling to be a politician.
It comes as Newshub Nation asked the public what they think about the National Party leader, many of whom confessed they don't know much about him.
"The real question, of course, is substance," Tamihere said on Newshub Nation's political panel.
"When you start to drill into the substance he's still struggling to be a politician."
"Just because you've been a good CEO doesn't mean you're going to be a rockstar when you arrive into politics."
Watch Newshub Nation's political panel above.
Watch Newshub Nation 9:30am Saturday/10am Sunday on Three & Three Now, and follow us on Facebook and Twitter.
Public Interest Journalism funded through NZ On Air.
