Labour government, 1974–1979
In March 1976, having just turned sixty years old, Wilson resigned as Prime Minister, ending his leadership of the Labour Party after thirteen years, and a total of nearly eight years as Prime Minister. He was replaced by James Callaghan, who had held senior government positions during both of Wilson's ministries, and had served as a Shadow Cabinet member in the early-1960s.
Henry Lefroy
On 3 October 1911, Lefroy was again elected to the Legislative Assembly seat of Moore, after a hiatus of over ten years. In 1915, he replaced James Mitchell as deputy of the Liberal Party. He was appointed Minister for Lands and Agriculture in Frank Wilson's second government on 27 July 1916. Wilson's government had difficulty maintaining parliamentary support, and was put under pressure to try to repeat the success at federal level of Prime Minister Billy Hughes in forming a Nationalist Party. A Nationalist Party was formed in May 1917, but the party voted to reconstruct the ministry by caucus election. Recognising that the intention was to oust the present ministry, Wilson and three of his ministers walked out of the meeting. Lefroy remained, and was elected leader of the party. Wilson then had no choice but to resign as premier, and Lefroy became Premier of Western Australia on 28 June 1917.