Scott Morrison is campaigning in Queensland where he needs to save a collection of marginal seats, while Bill Shorten is rallying the troops in Sydney.
The prime minister flew into Brisbane on Saturday night as he bids to save the coalition's 21 seats out of 30 available in the northern state.
That includes Home Affairs Minister Peter Dutton's seat of Dickson, which has a margin of about 1.6 per cent.
Mr Dutton apologised on Saturday for accusing his Labor opponent Ali France of using her disability "as an excuse" for not moving into the electorate.
Ms France lost her leg protecting her son from a car crash and spent more than $100,000 making her home, which is just outside Dickson, wheelchair accessible.
Mr Morrison and Mr Shorten have spent the past two days in Sydney campaigning, but will be in different states for day four.
Labor leader Mr Shorten will address a NSW volunteer rally in Burwood on Sunday, in the Liberal-held seat of Reid.
Mr Shorten has visited Reid several times already, as Labor attempts to win the seat after Liberal MP Craig Laundy retired.
The rally will hear from Mr Shorten and deputy Labor leader Tanya Plibersek about their plans to lift wages, tackle power prices and deal with climate change.
It's also expected that Mr Shorten will promise more health funding, restoring the money public hospitals lost when the 50/50 funding agreement with states ended.
Both Mr Morrison and Mr Shorten lost candidates on Saturday, with three Liberals in safe Labor seats dropping out due to constitutional eligibility concerns.
"There's a much higher awareness of section 44 issues," Mr Morrison told reporters on Saturday.
"I think what this demonstrates is just the party doing its job of proper further vets and checks before we get to close of nominations."
Labor candidate for Curtin pro-Palestine campaigner Melissa Parke, quit after it was reported she said she saw a pregnant refugee forced to drink bleach at a Gaza checkpoint.
"(This is) it's about a candidate who has decided she doesn't want to be a distraction," Mr Shorten told reporters.
