Cause of by-election
Sitting Liberal MP Melanie Gibbons announced that she would resign from Holsworthy at the time of the next federal election to contest the federal seat of Hughes, which will trigger a state by-election.
Margin – LIB 3.3%
South-west Sydney. Holsworthy covers south-eastern parts of the City of Liverpool and a small north-western part of Sutherland Shire. Holsworthy covers Barden Ridge, Casula, Chipping Norton, Holsworthy, Lucas Heights, Lurnea, Moorebank, Prestons and Wattle Grove.
In 2007, Megarrity won a third term, but with a reduced 2.7% margin.
In 2011, Megarrity retired and Liberal candidate Melanie Gibbons won Menai with a huge 27% swing. Gibbons was re-elected in 2015 and 2019.
|Michael Byrne||One Nation||3,905||8.1||+8.1|
|Gae Constable||Animal Justice||1,901||3.9||+3.9|
|Roland Barber||Liberal Democrats||614||1.3||+1.3|
2019 two-party-preferred result
Booths in Holsworthy have been split into two halves: east and west, divided by the Georges River.
The Liberal Party won a large 61.9% majority of the two-party-preferred vote in the east, while Labor won 55.7% in the west.
One Nation came third, with a slightly higher vote in the east.
|Voter group||ON prim||LIB 2PP||Total votes||% of votes|