2010 Australian federal election in the context of "Crossbencher"

An interregnum (plural interregna or interregnums) is a period of discontinuity or "gap" in a government, organization, or social order. Archetypally, it was the period of time between the reign of one monarch and the next (coming from Latin inter-, "between" and rēgnum, "reign" [from rex, rēgis, "king"]), and the concepts of interregnum and regency therefore overlap. Historically, longer and heavier interregna have been typically accompanied by widespread unrest, civil and succession wars between warlords, and power vacuums filled by foreign invasions or the emergence of a new power.

The term also refers to the periods between the election of a new parliament and the establishment of a new government from that parliament in parliamentary democracies, usually ones that employ some form of proportional representation that allows small parties to elect significant numbers, requiring time for negotiations to form a government. In the UK, Canada and other electoral systems with single-member districts, this period is usually very brief, except in the rare occurrence of a hung parliament as occurred both in the UK in 2017 and in Australia in 2010. In parliamentary interregnums, the previous government usually stands as a caretaker government until the new government is established. Additionally, the term has been applied to the United States presidential transition, the period of time between the election of a new U.S. president and their inauguration, during which the outgoing president remains in power, but as a lame duck.

Adam Paul Bandt (born 11 March 1972) is an Australian former politician and industrial lawyer who was the leader of the Australian Greens from 2020 to 2025. He previously served as the member of parliament (MP) for the Victorian division of Melbourne from 2010 to 2025 and was the co-deputy leader of the Greens from 2012 to 2015 and 2017 to 2020.

Bandt won his seat in the 2010 federal election, becoming the first member of the Greens elected to the House of Representatives at a federal election, and the second overall after Michael Organ, who was elected at a by-election. Bandt first contested the seat in 2007, narrowly losing to the Labor Party's Lindsay Tanner. Following his success in the 2010 election, Bandt retained the seat in the 2013, 2016, 2019, and 2022 elections. He was elected leader of the Greens following the resignation of Richard Di Natale in February 2020.

Robert James Murray Oakeshott (born 14 December 1969) is a retired Australian politician. He was the independent Member of the House of Representatives for the Division of Lyne in New South Wales from 2008, when he won the 2008 Lyne by-election, until his retirement in 2013. Oakeshott described his views as economically conservative and socially progressive.

Oakeshott began his political career in state politics. Originally elected as the National Party candidate for the state seat of Port Macquarie in the New South Wales Legislative Assembly in 1996, he left the party to become an Independent in 2002. Oakeshott retained the seat until 2008, when he resigned to contest the federal seat of Lyne, which he won with a large margin. He retained Lyne at the 2010 election, again with a large margin.

Antony Harold Curties Windsor, AM (born 2 September 1950) is a former Australian politician. Windsor was an independent member for the New South Wales Legislative Assembly seat of Tamworth from 1991 to 2001 − supporting the incumbent Greiner Liberal/National Coalition minority government at the 1991 election.

He subsequently entered federal politics, serving as an independent member for the Australian House of Representatives seat of New England from 2001 until retiring in 2013 − supporting the incumbent Gillard Labor minority government at the 2010 election.

Anthony John Crook (born 23 June 1959) is a retired Australian politician. He was the member of the Australian House of Representatives seat of O'Connor for the National Party of Western Australia from the 2010 federal election until August 2013. Crook served as chairman of the Western Division of the Royal Flying Doctor Service for 10 years until his retirement in 2009.