Sir Johannes Bjelke-Petersen was a conservative Australian politician. He was the longest-serving and longest-lived premier of Queensland, holding office from 1968 to 1987, during which time the state underwent considerable economic development. He has become one of the most well-known and controversial figures of 20th-century Australian politics because of his uncompromising conservatism, political longevity, and the institutional corruption of his government.

The 1975 Australian constitutional crisis, also known simply as the Dismissal, culminated on 11 November 1975 with the dismissal from office of the prime minister, Gough Whitlam of the Australian Labor Party (ALP), by Sir John Kerr, the Governor-General who then commissioned the leader of the Opposition, Malcolm Fraser of the Liberal Party, as prime minister. It has been described as the greatest political and constitutional crisis in Australian history.