But it was the issue of changes to superannuation that continued to dominate the agenda.
Malcolm Turnbull headed to a mattress factory in Sydney to promote his so-called innovation agenda.
But it was debate over the government's planned changes to superannuation tax concessions that dominated the day.
The government is facing internal pressure from some of its own MPs and supporters over budget measures aimed at limiting the tax-free status of retirement accounts over $1.6 million and transition-to-retirement arrangements.
Seniors groups also say they're concerned over the changes, which will affect an estimated 115,000 people, aged between 55 and 64, from July next year.
Cabinet secretary Arthur Sinodinos suggested that the government will consult the party room on the changes after the election.
But Malcolm Turnbull insists there'll be no changes to the policy.
"For people on very high incomes and people with very large balances, it is not quite as generous as it used to be and they are being required to pay some tax. But 15 per cent is a lower rate of tax than any of you pay, any Australians pay on their own personal income. So it remains a very generous system. "
Opposition leader Bill Shorten says Australians are rightly questioning the government's priorities.
He's calling on Malcolm Turnbull to explain the coalition's plans for superannuation.
"He promised on Sunday night in that debate there would be no changes after the election to superannuation. Yet his right-man, his numbers man, Senator Sinodinos, has said in the last 24 hours that the party room could well change superannuation measures after the election. Who is telling the truth?"
Meanwhile, Labor outlined its commitment to action on climate change, pledging Australia would derive 50 percent its energy from renewable sources by 2030.
Deputy leader, Tanya Plibersek, says Australia was once a leader in renewable energy.
"When we first came to government in 2007, about 500 roof tops across Australia had solar panels on them. When we left office it was over a million. We tripled wind energy production when we were in government. We tripled employment in the renewable sect other. We were in the top four countries for renewable energy and now we are not even in the top 10."
Treasurer Scott Morrison has criticised Labor's economic agenda, saying Labor is putting a $100 billion tax burden on the Australian economy which will be, what he calls, a toxin on growth.
He says Labor's higher taxes are not designed to reduce the deficit, instead it will result in higher deficits and higher debt.
"Bill Shorten has declared war on business and as a result he's declared war on growth. This is the Leader of the Opposition who has no plan for jobs and growth and what he's done with his agenda for $100 billion of higher taxes over the next 10 years is to declare war on growth in our economy. Yesterday he didn't want to acknowledge the growth and today and going forward he will continue to seek to attack growth with these toxic taxes that will be a toxin for our growth going forward."
Slightly off the campaign radar, Labor's Tanya Plibersek and Bill Shorten were handed a box containing a rat while they toured Sydney's Fish Market.
It was a practical joke, but Ms Plibersek later tweeted that the rat was safely at her house, snacking on nuts and banana.
And campaigning in Rockhampton, Deputy Prime Minister, Barnaby Joyce, said he'd continue to use words like "mate" and "guys" , arguing they're part of the Australian lexicon.
He was responding to a call by Australian of the Year, David Morrison, to stop using gender specific terms.
