Deputy Prime Minister of Australia accepted the view put to him by McEwen that to commission a Liberal temporarily as Prime Minister would give that person an unfair advantage in the forthcoming party room ballot for the permanent leader. McEwen's appointment was in keeping with the previous occasion when the main non-Labor party was without a leader; Earle Page of the Country Party was interim Prime Minister between 7 and 26 April 1939—the period between Joseph Lyons' sudden death and the United Australia Party naming Robert Menzies his successor. Since 1968 only two Deputy Prime Ministers have gone on to become Prime Minister: Paul Keating
Australian home front during World War II the plan. Menzies announced to his Cabinet that he thought he should resign and advise the Governor-General to invite Curtin to form Government. The Cabinet instead insisted he approach Curtin again to form a war cabinet. Unable to secure Curtin's support, and with an unworkable parliamentary majority, Menzies resigned as prime minister and leader of the UAP on 29 August 1941. He was succeeded as prime minister by Fadden, the leader of the Country Party, who held office for a month. Billy Hughes, then aged 79, replaced Menzies as leader of the UAP. The two independents crossed the floor, bringing