Description:Australian Prime Minister Julia Gillard called for a leadership vote on Thursday (March 21) after party rivals urged her to step aside and for former leader Kevin Rudd to head the minority government, in an attempt to stave off election defeat. "For the information of the house I have determined that there will be a ballot for the leadership and the deputy leadership of the Labor arty at 4.30 (0530GMT) today. In the meantime take your best shot," she said.(0:30)