The prime minister cast his ballot in his Sydney seat of Grayndler, with the opposition leader arriving in Brisbane to vote in his Dickson electorate.
It caps off five weeks of crisscrossing the country for both leaders, who covered massive distances and a number of crucial marginal seats.
With voters stalled in long queues at some voting centres, there's little time left before 6pm closing in the east.
Labor was sending text messages to voters during polling day, attacking the Greens and the Liberals.
In the nation's capital, Canberrans took advantage of the city's democratic heritage by voting at Old Parliament House.
In Victoria, Kooyong MP Monique Ryan was being stopped by a journalist when a bird in a tree pooed on her.
The Liberals are desperate to wrest the seat back from the teal independent, which was previously held by former treasurer Josh Frydenberg.
At Mount Nelson Primary School in Hobart, a twist was added to the treats on offer in addition to the beloved democracy sausage.
Jacqui Lambingtons, eClair Chandlers and Brown's Brownies have made cake stall appearances as part of the fun.
Christine Palmer, a school parent managing the cake stall, said the kids had come up with the names.
Creative cake stalls have popped up all around the country, including a sign in Sydney "Make Australia Bake Again" and the "Crumpet of Patriots".
In Western Australia, which was crucial to delivering Mr Albanese his 2022 election win, independent MP Kate Chaney fights to hang onto her marginal seat of Curtin.
Casting her vote at a primary school in Perth's wealthy suburbs, Ms Chaney said the attack ads had been "thicker, faster and more desperate".
"The major parties are deeply threatened by the idea of a parliament that actually holds them to account," she told reporters.
"The hardest part is probably this part, the constant media scrutiny and the personal attacks ... this is the reason more people don't want to go into politics."
Mr Albanese aims to become the first prime minister since 2004 to win back-to-back elections, while Mr Dutton fights to overcome history as the first leader since 1931 to unseat a government after one term.
Speaking at the MCG in Melbourne, the prime minister said Labor was after the "holy grail" of winning back-to-back elections.
He did the rounds on morning TV, giving a number of interviews.
Treasurer Jim Chalmers urged Australians to vote for stability in a period of global uncertainty.
"We are so grateful for the opportunity that the people of Australia have given us and we seek another term with humility," he said.
The final YouGov poll before election day shows Labor in the box seat to form majority government.
The poll, provided to AAP, has Labor ahead 52.2 per cent to 47.8 per cent on a two-party preferred basis.
Based on the survey of more than 3000 people, Labor would slightly increases its vote from the 2022 election by 0.07 per cent.
The coalition would receive 31.4 per cent of the primary vote, followed by Labor on 31.1 per cent, with the Greens on 14.6 per cent.
Mr Albanese also leads Mr Dutton 51 per cent to 34 per cent as preferred prime minister.
The Australian Electoral Commission said on Friday more than 7.3 million people had already cast their ballot, while more than 10 million are expected to vote on Saturday.
Labor went into election day with 78 seats, while the coalition had 57 in the 150-seat House of Representatives.
A majority of 76 seats is needed for a party to form government.
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