Mr Shorten has narrowly won the second leaders debate but Scott Morrison can take heart from the 16 per cent of voters who couldn't decide.
The two leaders clashed over tax, climate change and education on a day when both lost candidates over offensive online comments.
Of the undecided voters at the debate in Brisbane, 43 per cent picked Mr Shorten, 41 per cent picked the prime minister, and 16 per cent had not made up their mind.
Mr Morrison regularly brought his answers back to tax and the cost of Labor's policies.
"We are facing some very difficult times in the years ahead ... we'll be able to steward you through," Mr Morrison said to close his remarks on Friday night.
But Mr Shorten said the economy wasn't working for too many working and middle-income Australians.
Australian Prime Minister Scott Morrison, left, and opposition leader Bill Shorten shake hands before the Sky News/Courier Mail People's Forum in Brisbane. Source: AAP
"Do you really think that life has been so fantastic in the last six years?" he asked.
On Saturday, Mr Shorten will announce a $1 billion package to protect the environment, including a new National Environment Protection Authority.
He said the funding would tackle the extinction crisis, cut single-use plastics, protect beaches and coastlines, clean up the nation's rivers, double the number of indigenous rangers caring for country, and protect the Great Barrier Reef.
"Drought across eastern Australia, reef bleaching events, fires in Tasmania and thousands of fish deaths in the Murray Darling system all speak to the state of environmental challenges facing us in the 21st century," Mr Shorten said.
"It's time to fundamentally change our approach to addressing the environmental crises."
Labor's plan includes $100 million for a native species protection fund to increase numbers of endangered plants and animals while eliminating non-native pests.
Coastal erosion would be targeted with a $62 million pledge to prepare Australia's beaches for climate change.
"Australia's coastal communities are already seeing the impacts of climate change and rising sea levels, in increased coastal erosion, a loss of dunes and inundation," Mr Shorten said.
Mr Morrison will announce $100 million to boost hospital services in southeast Queensland, including a standalone urgent care service at Logan Hospital.
Prime Minister Scott Morrison Treasurer and Josh Frydenberg at a press conference at Studley Park in Kew, Melbourne, Friday, May 3, 2019. Source: AAP
"$100 million will help improve services, reduce wait times and deliver greater access to cancer care and mental health services," Mr Morrison said.
The urgent care service would be based at Logan Hospital using $33.4 million, to take pressure off its emergency department and specialist outpatient services.
The package also includes $30 million to redevelop the Redland Hospital, including a renal dialysis and acute patient building.
A paediatric emergency treatment service would also be established at Redcliffe Hospital, using $10 million.
Unlike Labor's health promises, Mr Morrison will argue his plan improves services, reduces wait times and makes it easier for people to access cancer and mental health treatment without costing Australians elsewhere.
"We can deliver this record investment in health without raising taxes for hard-working Queenslanders," he says.
The commitment comes as the coalition is fighting to hold ground in the Sunshine State and gain some from Labor.
This week, Liberal candidate for the Tasmanian seat of Lyons, Jessica Whelan, and Labor's candidate for Melbourne, Luke Creasey, were under pressure for days over posts they had made on Facebook.
Ms Whelan resigned on Friday after admitting she made some anti-Islamic posts while Mr Creasey quit over rape jokes and comments he made about watching a friend have sex.
So far, 15 candidates have fallen by the wayside for a variety of reasons, including dual citizenship and inappropriate online comments.
