Labor's Anoulack Chanthivong is set to serve a second term as State Member for Macquarie Fields.
With just over 30 per cent of the vote counted at 10pm, Mr Chanthivong had 65 per cent of first preference votes, well ahead of Liberal rival Zahurul Quazi on 34 per cent.
Speaking to The Advertiser at a post election function in Ingleburn, Mr Chanthivong thanked voters for having faith in him.
"It will be a privilege to represent the wonderful people of Macaquarie Fields for the next four years," he said.
"It is a honour to represent the community I grew up in, and a community I really care about.
Mr Chanthivong said the election result in Macquarie Fields showed voters had overwhelmingly endorsed his campaign against overdevelopment and his efforts to save the Scenic Hills and Hurlstone.
He said he would continue to fight to ensure his constituents got "their fair share".
Mr Chanthivong has held the Macquarie Fields seat since taking over from former MP Dr Andrew McDonald in 2015.
The Glen Alpine resident formerly served as Campbelltown mayor and spent more than a decade on council.
Since in office, he has campaigned relentlessly for the improvement of parking resources at Leppington and Edmondson Park train stations and to save Hurlstone Agricultural High School at Glenfield from development.
The 41-year-old's biggest issue, however, is 'stop the squeeze' a campaign to stop overdevelopment in the Macquarie Fields electorate.
Mr Chanthivong was born in Laos and grew up in Raby. He graduated from the University of Sydney and London School of Economics.
He has a young daughter, Audrey, with his wife Anna.