Mackellar – Australia 2025

IND 3.3% vs LIB

Incumbent MP
Sophie Scamps, since 2022.

• Geography
• Redistribution
• History
• Candidates
• Assessment
• 2022 results
• Booth breakdown
• Results maps

Geography
Northern beaches of Sydney. Mackellar covers northern parts of the Northern Beaches council area. Major suburbs include Dee Why, Collaroy, Narrabeen, Mona Vale, Avalon and Frenchs Forest.

Redistribution
Mackellar expanded south, taking in Forestville, Killarney Heights and North Curl Curl from Warringah. Adding in the vote for Zali Steggall in these areas, it improved the independent margin from 2.5% to 3.3%.

History
Mackellar was created in 1949 as part of the expansion of the House of Representatives. It had always been won by the Liberal Party with substantial margins, prior to 2022.

The seat was first won in 1949 by William Wentworth, grandson of colonial political figure William Charles Wentworth. Wentworth had previously polled 20% of the vote in the seat of Wentworth (named after his grandfather) as an independent in 1943.

Wentworth was a leading red-baiter in Parliament during the 1950s, although he remained in Parliament for almost two decades after winning Mackellar. He was close to John Gorton, and when Gorton became Prime Minister in early 1968 he appointed Wentworth to cabinet as the first ever federal minister with responsibility for Aboriginal affairs. Wentworth remained on the frontbench under Billy McMahon and served in the ministry until McMahon’s defeat in 1972.

Wentworth announced his retirement in 1977, but didn’t wait for the election to resign from the Liberal Party, after returning to the role of outspoken backbench rebel during the first term of the Fraser government. He ran as an independent for the Senate in 1977 and polled 2%.

Wentworth was succeeded in Mackellar by Liberal candidate Jim Carlton, who had served as the state party’s General Secretary during the 1970s. Carlton served as a minister in the final year of the Fraser government, and was a frontbencher in the Liberal opposition from the Hawke government’s election in 1983 until the 1990 election. Carlton retired from Parliament in 1994.

The ensuing by-election was won by sitting Senator and Liberal frontbencher Bronwyn Bishop. Bishop had been a  Senator for New South Wales since 1987, and had been a prominent Opposition frontbencher, and had been discussed as a possible leadership contender. She played a prominent role in the opposition frontbench after winning the by-election, but her colleagues did not share her assessment of her leadership potential, and she was passed over in favour of first Alexander Downer and then John Howard.

Bishop was re-elected to seven full terms from 1996 to 2013. Bishop was appointed to a junior ministerial role after the election of the Howard government in 1996. She was dropped from the ministry after the 2001 election after a controversial tenure as Minister for Ageing. She was elected Speaker after the 2013 election, but was forced to step down in August 2015 after criticisms over extravagant travel expenses.

Bishop lost Liberal preselection to Jason Falinski in 2016. Falinski won Mackellar in 2016 and was re-elected in 2019.

Falinski was defeated in 2022 by local independent candidate Sophie Scamps.

Candidates

• James Brown (Liberal)
• Ethan Hrnjak (Greens)
• Jeffrey Quinn (Labor)
• Sophie Scamps (Independent)

Assessment
Mackellar is a very marginal seat, but Scamps now has the advantage of incumbency which will makes her the favourite to win re-election.

2022 result

2022 two-candidate-preferred result

2022 two-party-preferred result

Booth breakdown

Mackellar covers all of the former Pittwater council area and a majority of the former Warringah council area, all now contained in the Northern Beaches council area. All of the polling places in the Pittwater area have been grouped together as “north”. Those in Warringah have been split between “south-east” on the coast and “west” further inland.

Scamps won a majority of the two-candidate-preferred vote in all three areas, ranging from 51.8% in the west to 57.8% in the north.

Election results in Mackellar at the 2022 federal election
Toggle between two-candidate-preferred votes (Independent vs Liberal), two-party-preferred votes and primary votes for the Liberal Party and independent candidates

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