Division of Isaacs

This article is about the current federal electorate. For the former electorate, see Division of Isaacs (1949–1969).

Isaacs Australian House of Representatives Division
File:Division of Isaacs 2025.svg <mapframe zoom="11" frameless="1" height="300" latitude="-38" longitude="145.16" width="400">{"properties":{"stroke-width":6,"stroke":"#ff0000","title":"Division of Isaacs"},"type":"ExternalData","title":"Australian Federal Electorates/Victoria (2025)/Isaacs.map","service":"page"}</mapframe> Interactive map of electorate boundaries from the 2025 federal election
Created	1969
MP	Mark Dreyfus
Party	Labor
Namesake	Sir Isaac Isaacs
Electors	120,804 (2025)
Area	158 km2 (61.0 sq mi)
Demographic	Outer metropolitan
Electorates around Isaacs: Goldstein Hotham Bruce Port Phillip Isaacs Holt Port Phillip Dunkley Holt

The Division of Isaacs is an Australian Electoral Division in the state of Victoria. It is located in the south-eastern suburbs of Melbourne, on the eastern shores of Port Phillip Bay. It covers the suburbs of Mordialloc, Keysborough (part), Waterways, Cheltenham (part), Dingley Village, Chelsea, Aspendale, Aspendale Gardens, Edithvale, Bonbeach, Patterson Lakes, Carrum, Parkdale, Mentone, Dandenong South, Highett, Heatherton and Moorabbin.

Geography

Since 1984, federal electoral division boundaries in Australia have been determined at redistributions by a redistribution committee appointed by the Australian Electoral Commission. Redistributions occur for the boundaries of divisions in a particular state, and they occur every seven years, or sooner if a state's representation entitlement changes or when divisions of a state are malapportioned.

As a result of a periodical boundary redistribution, from the 2025 Australian federal election, Isaacs’ boundaries moved north and east to include the suburbs of Keysborough, Springvale South, Noble Park (part) and Dandenong (part), while losing the suburbs of Chelsea (part), Chelsea Heights (part), Bonbeach, Carrum and Patterson Lakes to neighbouring Dunkley and parts of Moorabbin, Highett and Cheltenham to Goldstein.

History

File:Isaac Isaacs 1936 (cropped).jpg

Sir Isaac Isaacs, the division's namesake

The division was named after Sir Isaac Isaacs, former Chief Justice of Australia and the first Australian-born Governor-General of Australia. It was proclaimed at the redistribution of 21 November 1968, and first contested at the 1969 federal election. Originally a marginal seat, it switched regularly between the Liberals and Labor. However, Labor has held it without interruption since 1996, and it is now considered fairly safe for that party.

The former Division of Isaacs (1949–69) was located in the inner south-eastern suburbs of Melbourne, and was not related to this division except in name.

Mark Dreyfus became the new Labor member in 2007, and has been re-elected ever since. The division was also contested in 2007 by Laura Chipp, daughter of Don Chipp, for the Australian Democrats.

Members

Image		Member	Party	Term	Notes
	File:David Hamer 1970.jpg	David Hamer (1923–2002)	Liberal	25 October 1969 – 18 May 1974	Lost seat
	File:Gareth Clayton 1974 (cropped).jpg	Gareth Clayton (1942–2010)	Labor	18 May 1974 – 13 December 1975	Lost seat
	File:David Hamer.jpg	David Hamer (1923–2002)	Liberal	13 December 1975 – 10 November 1977	Transferred to the Senate
	File:Liberal Placeholder.png	Bill Burns (1933–2009)		10 December 1977 – 18 October 1980	Lost seat
	File:Labor Placeholder.png	David Charles (1948–)	Labor	18 October 1980 – 19 February 1990	Retired
	File:Liberal Placeholder.png	Rod Atkinson (1948–)	Liberal	24 March 1990 – 2 March 1996	Lost seat
	File:Labor Placeholder.png	Greg Wilton (1955–2000)	Labor	2 March 1996 – 14 June 2000	Died in office
	File:Labor Placeholder.png	Ann Corcoran (1951–)		12 August 2000 – 17 October 2007	Lost preselection and retired
	File:Mark Dreyfus (2025) (cropped).jpg	Mark Dreyfus (1956–)		24 November 2007 – present	Served as minister under Gillard, Rudd, and Albanese. Incumbent.

Election results

Main article: Electoral results for the Division of Isaacs

section excerpt Results of the 2025 Australian federal election in Victoria § Isaacs.[edit]

2025 Australian federal election: Isaacs

Party		Candidate	Votes	%	±%
	Labor	Mark Dreyfus	53,454	49.41	+6.63
	Liberal	Fiona Ottey	30,660	28.34	−1.20
	Greens	Matthew Kirwan	15,200	14.05	+1.98
	One Nation	Geoff McMahon	4,989	4.61	+1.59
	Family First	Audrey Harmse	3,878	3.58	+3.58
Total formal votes			108,181	96.47	−0.05
Informal votes			3,958	3.53	+0.05
Turnout			112,139	92.87	+3.76
Two-party-preferred result
	Labor	Mark Dreyfus	69,604	64.34	+4.83
	Liberal	Fiona Ottey	38,577	35.66	−4.83
	Labor hold		Swing	+4.83

External links

• Division of Isaacs – Australian Electoral Commission