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
Prime Minister of Israel Basic Laws of Israel explicitly vest executive power in the government, of which the Prime Minister is the leader. The office of Prime Minister came into existence on 14 May 1948, the date of the Declaration of the Establishment of the State of Israel, when the provisional government was created. David Ben-Gurion, leader of Mapai and head of the Jewish Agency became Israel's first Prime Minister. The position became permanent on 8 March 1949, when the first government was formed. Ben-Gurion retained his role until late 1953, when he resigned in order to settle in the Kibbutz of Sde Boker.