A Labor election victory would be comparable to Paul Keating's "sweetest victory of all" in 1993, according to deputy leader Tanya Plibersek.
Ms Plibersek cast her ballot at Darlinghurst Primary School on Saturday morning, saying only Labor could provide strong health, education and workplace policies.
She said the election remained neck and neck, with many voters still to make up their minds.
Ms Plibersek was proud of Labor's work in opposition over the past three years.
"We are as close today as we were before the 1993 election, the one Paul Keating called the sweetest victory of all," Ms Plibersek said.
"If we happen to win today after all our hard work, after putting out our 100 positive policies, it'll be a sweet victory indeed."
Ms Plibersek encouraged voters to eschew independents as they were rarely scrutinised as well as the two major parties.
