Support for her party is plunging to record lows amid a damaging internal fight over energy and climate policy but Opposition Leader Sussan Ley is vowing to continue taking the fight to Labor.

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Ms Ley's personal standing among voters has also taken a nosedive, according to the latest Newspoll, as MPs joust over the future direction of the coalition.

The party's primary vote has dropped to 24 per cent, giving Labor a 57 to 43 lead on a two-party-preferred basis.

The figure is well below the coalition's result at the May election, which severely

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