Julia Gillard continued to differ as to the extent of Gillard's foreknowledge and planning of the replacement of Rudd. Rudd initially said that he would challenge Gillard, but it soon became apparent that he did not have enough support within the party to survive in his position. Hours before the vote on 24 June, he resigned as Prime Minister and Leader of the Labor Party, leaving Gillard to assume the leadership unopposed. Treasurer Wayne Swan was at the same time elected unopposed to succeed Gillard as Deputy Leader. Shortly afterward, Gillard was sworn in as the 27th Prime Minister of Australia by
Gillard Government Parliamentary member of the ALP Right Faction, nominated the government's handling of the way in which Rudd had "introduced the debate" about the Resource Super Profits Tax as one of the main considerations which had led to a shift in support from Kevin Rudd to Julia Gillard as leader of the party. After becoming Prime Minister, Gillard cancelled the Rudd Government's controversial $40 million advertising campaign supporting its mining super profits tax and called on miners to withdraw their own media campaign against the tax. Gillard pledged to re-negotiate the tax proposal and a revised Minerals Resource Rent Tax was