As Scott Morrison and Bill Shorten enter the final days of the federal election campaign, it's expected at least a third of voters will have cast early ballots by Saturday.
As of Wednesday morning, about 27 per cent of enrolled voters or 4.5 million people had either sought a postal ballot or lodged a pre-poll vote.
It's widely predicted the record of 31 per cent set in 2016 will be beaten before the polls open on Saturday, with published surveys - and a famous crocodile - pointing to a narrow Labor win.
The prime minister and opposition leader on Wednesday faced scrutiny over who would run their key portfolios in government.
Mr Morrison wouldn't say who would be his industrial relations, human services, indigenous affairs and women's ministers.
But he attacked Bill Shorten for not revealing who his home affairs minister would be.
"We don't even know from Bill Shorten who's stopping the boats on Sunday? He can't tell us who it is," Mr Morrison told reporters in Geelong.
Mr Shorten has previously said he has "plenty of people who could do the role" and there has been speculation Senator Kristina Keneally could take over home affairs.
The Labor leader was in Perth addressing a business breakfast, where he said he wanted to see people's wages grow so they could buy homes.
"I believe in a country where the middle class grow, the working class can get out of the working class into the middle class," he told the crowd.
Mr Morrison went to a half-built house near Geelong, where he made "no apology" for pumping money into the ultra-marginal Liberal seat of Corangamite.
He again promoted the policy - which Labor has agreed to match - to guarantee deposits to help first-home buyers into the market.
"Nothing speaks to the aspirations of Australians like buying your own home," Mr Morrison told reporters.
Mr Shorten announced a new body to sit alongside the Fair Work Commission to crack down on wage theft, ensuring ripped off workers with unpaid wage claims of up to $100,000 could have them resolved in a day.
Independents are also in focus, as the possibility of Australians electing a hung parliament weighs on both parties.
Deputy Labor leader Tanya Plibersek is eager to avoid that situation.
"Truly, for Australia's sake, I really hope people don't vote for minority government because we have had six years of chaos and division," she told Nine's Today.
Meanwhile, Burt the psychic crocodile - the 5.1 metre star of Crocodile Dundee - picked Mr Shorten to be prime minister when presented with photos of the two leaders on Wednesday.
He and his Darwin-based reptile colleagues have a perfect record, with Burt choosing Malcolm Turnbull in 2016 and his predecessors choosing Tony Abbott (2013) and Julia Gillard (2010).
Mr Morrison will be at the National Press Club on Thursday, while Mr Shorten will deliver a speech in Sydney at the same venue used by Gough Whitlam in 1972 for his famous It's Time address.
