As Liberal infighting continues to play out publicly, support for One Nation has skyrocketed in a series of recent polls. So, what's behind the shift — and how much of a threat are grievance politics to the major parties?

And Opposition leader Sussan Ley has announced a Shadow Cabinet reshuffle, but Jane Hume remains on the backbench and in the political wilderness.

Brett Worthington and Shalailah Medhora break it all down on Politics Now.

Got a burning question?

Got a burning political query? Send a short voice recording to Brett and Mel for Question Time at thepartyroom@abc.net.au