Deputy Prime Minister of Australia and Julia Gillard. In both cases, they succeeded incumbent Prime Ministers who lost the support of their party caucus mid-term and their election as party leader preceded their predecessor's resignations and their subsequent appointments as Prime Minister. Frank Forde, who had been deputy Labor leader when John Curtin died, was interim Prime Minister between 6 and 13 July 1945, when a leadership ballot took place that elected Ben Chifley as Curtin's successor. In November 2007, when the Australian Labor Party won government, Julia Gillard became Australia's first female, and first foreign-born, Deputy Prime Minister. In 2017, the position became vacant
Julia Gillard conclusion of a criminal investigation. After a week of controversy, Gillard announced that she was asking Slipper to delay his return to the Chair pending the conclusion of concurrent civil proceedings, in an effort to dispel what she described as a "dark cloud" over her government (a reference also to the ongoing Craig Thomson affair involving a Labor MP linked to corruption allegations). In the light of poor polling results for the Gillard Government, speculation that Foreign Minister and former Prime Minister Kevin Rudd wished to challenge Gillard for the leadership culminated with Rudd resigning from the Cabinet on 22