The 2010 Australian federal election was held on Saturday, 21 August 2010 to elect members of the 43rd Parliament of Australia. The incumbent centre-left Australian Labor Party led by Prime Minister Julia Gillard won a second term against the opposition centre-right Liberal Party of Australia led by Opposition Leader Tony Abbott and Coalition partner the National Party of Australia, led by Warren Truss, after Labor formed a minority government with the support of three independent MPs and one Australian Greens MP.
A by-election was held for the South Australian House of Assembly seat of Frome on 17 January 2009. This was triggered by the resignation of former Premier and state Liberal MHA Rob Kerin. The seat had been retained by the Liberals at the 2006 state election on a 3.4 per cent margin, and at the 2002 state election on an 11.5 per cent margin.
The 2013 Western Australian state election was held on Saturday 9 March 2013 to elect 59 members to the Legislative Assembly and 36 members to the Legislative Council.
The 2014 South Australian state election elected members to the 53rd Parliament of South Australia on 15 March 2014, to fill all 47 seats in the House of Assembly and 11 of 22 seats in the Legislative Council. The 12-year-incumbent Australian Labor Party (SA) government, led by Premier Jay Weatherill, won its fourth consecutive four-year term in government, a record 16 years of Labor government, defeating the opposition Liberal Party of Australia (SA), led by Opposition Leader Steven Marshall.
A by-election occurred for the New South Wales Legislative Assembly seat of Heffron on Saturday 25 August 2012. This was triggered by the resignation of former Premier of New South Wales Kristina Keneally (Labor) which she announced on 23 June 2012. Labor easily retained the seat with an increased margin. Ron Hoenig received a 60 percent primary and 70 percent two-candidate preferred vote.
The 2016 Australian federal election was a double dissolution election held on Saturday 2 July to elect all 226 members of the 45th Parliament of Australia, after an extended eight-week official campaign period. It was the first double dissolution election since the 1987 election and the first under a new voting system for the Senate that replaced group voting tickets with optional preferential voting.
The 2017 Western Australian state election was held on Saturday 11 March 2017 to elect members to the Parliament of Western Australia, including all 59 seats in the Legislative Assembly and all 36 seats in the Legislative Council. The eight-and-a-half-year two-term incumbent Liberal–WA National government, led by Premier Colin Barnett, was defeated in a landslide by the Labor opposition, led by Opposition Leader Mark McGowan.
The 2018 South Australian state election to elect members to the 54th Parliament of South Australia was held on 17 March 2018. All 47 seats in the House of Assembly or lower house, whose members were elected at the 2014 election, and 11 of 22 seats in the Legislative Council or upper house, last filled at the 2010 election, were contested. The record-16-year-incumbent Australian Labor Party (SA) government led by Premier Jay Weatherill was seeking a fifth four-year term, but was defeated by the opposition Liberal Party of Australia (SA), led by Opposition Leader Steven Marshall. Nick Xenophon's new SA Best party unsuccessfully sought to obtain the balance of power.
The 2017 Queensland state election was held on 25 November 2017 to elect all 93 members of the Legislative Assembly of Queensland, the unicameral Parliament of Queensland.
The 2021 Western Australian state election was conducted on Saturday 13 March 2021 to elect members to the Parliament of Western Australia, where all 59 seats in the Legislative Assembly and all 36 seats in the Legislative Council were up for election.
A by-election for the Australian House of Representatives seat of Bennelong was held on 16 December 2017.
A by-election for the electoral district of Cottesloe in Western Australia took place on 17 March 2018. The by-election was triggered by the resignation of the Liberal Party member, Colin Barnett, on 5 February 2018. Barnett was the Premier of Western Australia from 23 September 2008 until 17 March 2017, when he was succeeded as Premier by Mark McGowan after the Labor Party defeated Barnett's Liberal government at the 2017 state election in March 2017. The by-election was won by the Liberal candidate David Honey.
A by-election for the Australian House of Representatives seat of Perth, took place on Saturday 28 July, 2018 following the resignation of incumbent Labor MP, Tim Hammond.
A by-election for the Australian House of Representatives seat of Mayo took place on Saturday 28 July 2018, following the resignation of incumbent Centre Alliance MP Rebekha Sharkie.
A by-election for the Australian House of Representatives seat of Longman took place on Saturday 28 July 2018, following the resignation of incumbent Labor MP Susan Lamb.
A by-election for the Australian House of Representatives seat of Braddon took place on Saturday 28 July 2018, following the resignation of incumbent Labor MP Justine Keay.
A by-election for the Western Australian Legislative Assembly seat of Darling Range was held on 23 June 2018 following the resignation of Barry Urban on 8 May.
The July 2018 Australian federal by-elections, known colloquially as Super Saturday, were five by-elections held on 28 July 2018, to fill vacancies in the Australian House of Representatives caused by the resignations in May 2018 of five MPs. Three MPs of the Australian Labor Party and the Centre Alliance's sole MP resigned due to dual citizenship concerns after the High Court ruled on 8 May 2018 that Senator Katy Gallagher was ineligible to have been elected to the Australian Senate for being a dual citizen, in similar circumstances to four of the lower house MPs. Labor MP for Perth Tim Hammond resigned for family reasons on the same day, causing the first time ever that five by-elections would be held on the same day in Australia. All sitting MPs apart from Hammond re-contested and won the ensuing by-elections.
A by-election for the Australian House of Representatives seat of Wentworth took place on 20 October 2018 after the parliamentary resignation of the former Prime Minister of Australia and incumbent Liberal MP Malcolm Turnbull.
The 2020 Eden-Monaro by-election was held on 4 July 2020 to elect the next Member of the Australian Parliament for the division of Eden-Monaro in the House of Representatives. The by-election was triggered following the resignation of incumbent Labor MP Mike Kelly. Kelly resigned on 30 April 2020, citing ill health.
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