ABC Elections

13 April - The resignation of former Liberal Prime Minister Scott Morrison will trigger a by-election in his safe southern Sydney seat of Cook.

23 March - Premier Jeremy Rockliff has called an early election in the hope to regaining majority government in an expanded Tasmanian House of Assembly.

23 March - Voters in the eastern Adelaide seat of Dunstan will vote at a by-election following the resignation of former Premier Steven Marshall.

16 March - Australia's largest local government body, Brisbane City Council, goes to the polls on March 16 along with councils across Queensland. There will also be state by-elections in Inala and Ipswich West.

2 March - The sad death of Labor MP Peta Murphy will trigger an early 2024 by-election in the Melbourne seat of Dunkley.

18 November - Voters in the Melbourne seat of Mulgrave face a by-election following Dan Andrews' resignation as Premier.

14 October - Australia votes in a referendum on a proposal for an Indigenous Voice to Parliament

26 August - At a time when the political focus should be on the Andrews government, the Warrandyte by-election has created a new challenge for the Victorian Liberal Party.

15 July - Voters in the Gold Coast seat of Fadden face a by-election following the resignation of former minister Stuart Robert.

25 March - After 12 years of Coalition government, NSW voters decide on 25 March whether to re-elect the government led by Premier Dominic Perrottet, or whether it is time for Chris Minns and the Labor Party to take power.

The resignation of former Minister Alan Tudge creates a by-election in Melbourne's east that could be a test for both the Albanese government and Opposition Leader Peter Dutton.

26 November - After a difficult few years in charge of the state's Covid response, the Andrews Labor government will seek a third term in office at the Victorian state election.

17 September - The remote WA seat of North West Central faces a by-election this weekend. Despite being a marginal seat, there is no Labor candidate. In a 12 candidate field, the contest will be between the Liberals and Nationals and could determine who is the Opposition Leader.

2 July - The resignation of former Deputy Premier Vicki Chapman will see voters in the Adelaide seat of Bragg go to the polls for a by-election.

Saturday 18 June. The by-election has been caused by resignation of former member Colin Boyce.

May - The 2022 federal election is set to reflect is the nation's two-years experience with Covid. Politics and attitudes to governments have changed dramatically for good and bad.

19 March - South Australians will head to the polls in March to decide who should lead the state in a post-pandemic world.

12 February - The 2022 election year begins with a challenge for new NSW Premier Dominic Perrottet, facing by-elections in the state seats of Bega, Monaro, Strathfield and Willoughby.

4 December Voters across New South Wales go to the polls on 4 December for the state's twice delayed local government election.

11 September Voters in the Northern Territory seat of Daly face a by-election on 11 September. The Labor government will have hopes of victory in a seat the opposition Country Liberals won by just 94 votes last year.

Voters in the southern Brisbane seat of Stretton will go to the polls following the untimely death of former member Duncan Pegg.

22 May The National Party faces a critical by-election that could cost the Berejiklian government its majority. And it there would be few more awkward seats to fight a by-election in than Upper Hunter, a complex electorate where important agricultural industries find themselves competing for space with equally important major coal mines.

1 May 2021: The election — which was due to be held by May next year — will be brought forward after the state government was plunged into minority when Speaker Sue Hickey was sacked from the Tasmanian Liberals on March 21.

13 March 2021 Protected by border closures, Western Australia goes to the polls on 13 March with the McGowan Labor government strongly tipped for re-election.

31 October Queensland goes to the polls on October 31, but a clear result may not be known for days with a higher than usual number of postal votes expected to delay the final count.