Liberals hurt in federal election by move to back WA hard border challenge, Michaelia Cash admits

Michaelia Cash says the WA vote was a resounding backing of Premier Mark McGowan. (ABC News: David Weber)

Senior West Australian Liberal Michaelia Cash has said she did not agree with the federal government's support of Clive Palmer's legal challenge to WA's hard border, conceding it contributed to the party's disastrous election result.