Sussan Ley has a supporter in John Howard, who says she must be given a go as leader. Photo: Lukas Coch/AAP PHOTOS

Former prime minister John Howard is urging the Liberal Party to "get behind" Sussan Ley as political infighting threatens to end her leadership of the coalition.

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The opposition leader on Friday was again forced to bat away questions surrounding her job, declaring she was not "commenting on commentary" after Liberal senator Sarah Henderson said Ms Ley was losing the party's support.

Internal division over the commitment to net-zero emissions by 2050, as well as polling

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