A former senior Labour MP says the party's treatment of Louisa Wall looks bad for Labour.

The outgoing MP told TVNZ's Q+A programme that Jacinda Ardern said she would never be a cabinet minister under her leadership.

She says she often felt unwelcome in the party.

Peter Dunne left Labour to set up United Future and told Kate Hawkesby what Wall's saying doesn't reflect the party's stated values.

“The Labour Party says it’s inclusive. The Labour Party says it tolerates the diversity of viewpoints being expressed. None of these things tends to apply in Louisa Wall’s case.”

LISTEN ABOVE