Labor is poised to win the Werribee by-election, with candidate John Lister leading by 593 votes, according to the Victorian Election Commission.
Despite holding power in Werribee since 1976, the Victorian Labor Party faced voter concerns in this election.
Liberal candidate Steve Murphy argued that removing Labor is necessary to bring new results and progress to the region.
Former Werribee treasurer Tim Palace recently resigned, emphasizing the need for increased investment to drive change.
In a separate election, Liberal candidate Rachel Westchey secured victory in Prahran, defeating Green candidate Angelica Di Camillo.
