Voters have turned their backs on the Palmer United Party after weeks of infighting, with support for the group down in every state, according to a new poll.

A Morgan Poll found PUP’s primary vote was down in New South Wales, Western Australia, Queensland, South Australia and Tasmania.

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The losses were greatest in NSW and Queensland, where the group’s primary vote dropped by two per cent.

The poor poll results come after weeks of tension between Senator Jacqui Lambie and PUP leader Clive Palmer, which culminated in Senator Lambie’s resignation on Monday.

Mr Palmer is also in court this week over claims he misused millions of dollars in Chinese funds.

The poll, conducted before Senator Lambie’s resignation, shows the Tasmanian senator is still popular in her hometown, with PUP losing only 0.5 per cent of their primary vote in Tasmania.