In a statement issued on Wednesday afternoon, Independent MP Andrew Wilkie said he and the Palmer United Party leader would move the motion if Bronwyn Bishop did not step down amid the expenses scandal.
“Bronwyn Bishop is not a fit person to occupy the highest position in the House of Representatives,” he said.
“[She] has abused parliamentary entitlements and treats public expectations with contempt. No wonder many members of the community question her integrity.”
RELATED STORY:
Get behind Speaker Bishop: Pyne
Mr Wilkie is expected to second a motion put forward by Mr Palmer, who has urged Mrs Bishop to “do the honourable thing and resign”.
Mr Palmer told SBS that he would be moving the motion on the first sitting day of parliament, saying that he didn't believe Mrs Bishop was "fair" in her position as Speaker.
He also drew comparisons with former Speaker Peter Slipper, who resigned from the position over an expenses scandal.
"And this is a much larger amount of money," he said.
RELATED STORY:
Bishop won't repay wedding claim
Senior Liberals have declined to say whether they have confidence in embattled Speaker, but believe any action should wait until an investigation is finalised.
The Finance Department is investigating Mrs Bishop's expenses claim relating to the chartering of a luxury helicopter to a fundraiser in Victoria in November last year.
She signed a document saying it was "official business", but Labor says she should be sacked for misusing taxpayer money.
