Federal Member for Canning Andrew Hastie has lambasted Mark McGowan for attacking Peter Dutton after his party's devastating election loss, backing him as next Liberal leader. 

"It really diminished him [McGowan] as the Premier - he needs to get his own house in order before he goes poking in the affairs of others," Hastie told Liam Bartlett on 6PR Mornings.

See omnystudio.com/listener for privacy information.