There's no imminent challenge to Sussan Ley but her party faces big questions about its positions. Photo: Mick Tsikas/AAP PHOTOS

The sooner the Liberal Party can sort out its differences the better but it may take a while after Andrew Hastie's departure to the back bench, according to one of the rogue MP's closest colleagues.

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Senator James Paterson says the opposition needs to resolve big questions about its policy positions as quickly as possible.

"But we do have to make sure we go through our processes," he conceded.

Andrew Hastie says he's heading to the back bench to speak mor

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