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.

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