Psephos - Adam Carr's Election Archive

Adam Carr's Election Archive

Australian federal election, 2025
Division of Corio, Victoria

Named for: Corio Bay (Indigenous word of unknown meaning, originally spelled Kohrio)


< Corangamite previous seat | next seat Cowan >
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South-west of Melbourne: Belmont, Geelong, Lara, Newtown, Norlane

Enrolment at 2019 election: 110,322
Enrolment at 2022 election: 112,517 (+02.1)

1999 republic referendum: No 55.5
2018 same-sex marriage survey: Yes 67.7
2023 Voice referendum: No 54.0


Sitting member: Hon Richard Marles (Labor): Elected 2007, 2010, 2013, 2016, 2019, 2022

Deputy Prime Minister
Minister for Defence


2007 Labor majority over Liberal: 8.9%
2010 Labor majority over Liberal: 14.2%
2013 Labor majority over Liberal: 7.8%
2016 Labor majority over Liberal: 10.0%
2019 Labor majority over Liberal: 10.3%
2022 Labor majority over Liberal: 12.8%
2025 notional Labor majority over Liberal: 12.5%

Status 2022: Safe Labor
Labor two-party vote 1983-2022


  • 2022 results
  • Statistics and history

  • Announced candidates:

    Hon Richard Marles
    Australian Labor Party

    Division of Corio

    Corio has existed since Federation, and has always been based on the provincial city of Geelong, though at times it has also included most of the western suburbs of Melbourne. Since the 1980s is has consisted only of Geelong and a few semi-rural areas to the north. Like most regional seats it has a relatively low median income level and a low proportion of people in professional and managerial occupations. As a manufacturing centre, however, Geelong has a higher level of non English speaking households than most regional cities. Corio has not been substantially changed by the 2024 redistribution.

    After being held by the Liberals through the 1950s and '60s, Corio has become a steadily stronger seat for Labor over the past 30 years. The Liberals have not won it since 1966. Members for Corio have included Liberal ministers Richard Casey and Sir Hubert Opperman and Labor ministers Jack Dedman and Gordon Scholes. Gavan O'Connor succeeded Scholes in 1993. He was on the opposition front bench, but in 2007 he was defeated in an acrimonious preselection battle, and contested the seat as an independent (with the usual result).

    Richard Marles, Labor MP for Corio since 2007, is a lawyer, and was legal officer for the Transport Workers' Union of Australia and then assistant secretary of the Australian Council of Trade Unions before his election. He was a parliamentary secretary from 2009, resigned in early 2013 during the Rudd-Gillard conflict, and returned briefly as Minister for Trade in the second Rudd Government. He was Deputy Leader of the Opposition from 2019, and in 2022 became Deputy Prime Minister and Minister for Defence in the Albanese government. If Labor were to lose the 2025 election, he would probably be a cancdidate for the Labor leadership.

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