Prime Minister Kevin Rudd says he will put his leadership to the vote in caucus on Thursday.
Deputy Prime Minister Julia Gillard had requested a leadership ballot, he said.
"I will be writing to the caucus to convene a special meeting at 9am tomorrow morning," Mr Rudd told reporters at a press conference in Canberra.
Mr Rudd said he was elected by the people of Australia as prime minister of Australia.
"I was elected to do a job," he said."I intend to continue doing that job."