2023 Rockingham state by-election
A by-election for the electoral district of Rockingham in Western Australia was held on 29 July 2023, following the resignation of Premier and sitting Labor MP Mark McGowan, on 8 June 2023. The writ was issued on the same day.
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Electoral district of Rockingham in the Western Australian Legislative Assembly | |||||||||||||||||||||||||||||||||
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Map showing the location of the electoral district of Rockingham (dark green) in metropolitan Perth, Western Australia | |||||||||||||||||||||||||||||||||
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The two major party candidates for the election were Magenta Marshall for the Australian Labor Party and Peter Hudson for the Liberal Party. Additionally, Hayley Edwards the Deputy Mayor of the City of Rockingham also announced her candidacy. The Greens preselected Madeleine De Jong. There are were nine candidates for the seat. Notably, both major parties preselected candidates under the age of 30.
The election was called for Labor at 7:30pm AWST, with Marshall claiming victory for the Labor Party. However, Labor suffered one of the biggest swings against it at a by-election in the state's history: with a swing against them of 33.4% in the primary vote and a swing against of 22.5% in the two-party-preferred vote.