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.

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 depleted its numbers in parliament.

Ms Ley's net approval rating crashed to minus 33, below that of former Liberal leader Peter Dutton on the eve of his election loss.

The under-pressure Liberal leader appeared alongside Prime Minister Anthony Al

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