There may have been a truce in the campaign between the prime minister and his Labor rival Bill Shorten in respect of Easter Sunday, but that didn't stop crossbench senators from getting on their soap boxes.

Mr Morrison attended his own church - the Pentecostal Horizon Church in Sydney's Sutherland Shire - for the Easter service, before heading to the Easter Show where he went on the Rock Star ride with his daughters and Deputy Prime Minister Michael McCormack.

Mr Shorten went to church in the Brisbane suburb of Indooroopilly with his family, including his mother-in-law and former governor-general Quentin Bryce, and then attended an Easter egg hunt in Griffith.

He is flying to Townsville on Sunday night.

The leaders had adhered to a campaign ceasefire on Good Friday and will also hold a truce on Anzac Day.

However, just before midnight on Saturday Labor cheekily squeezed in the promise of $118 million for all Australian veterans to receive the same funeral benefits, regardless of the conflict they served in.

Ignoring the truce altogether, Greens Senator Sarah Hanson-Young, who is up for election in the half-Senate vote on May 18, says she is in the "fight of my life".

"I have got to hold this Senate seat in South Australia and I'm not really interested in taking another day off," she told ABC news.

The senator, who was also interviewed on Sky News, continued her attack on the coalition's handling of the Murray-Darling Basin plan and in particular an $80 million water purchase, the largest on record.

She is writing to Mr Shorten to back her call for a royal commission into the plan should he win the May 18 election.

"We are going to clean up this shonkiness," Senator Hanson-Young said.

Centre Alliance Senator Rex Patrick is on board for a federal inquiry, concerned the company involved in the $80 million water buyback resides in the Cayman Islands.

"I am absolutely disturbed that the Australian government has been dealing with a company that is domiciled in a tax haven," Senator Patrick told ABC news.

The senator could hold a key role in the upper house crossbench after the May 18 election.

He is against Labor's franking credits reforms and still believes there are questions over the changes to negative gearing being put forward by Mr Shorten's party, concerned that it will impact on rental accommodation.

But he has previously voted for restoring penalty rates, a top priority if Labor wins power.

"It is our view that people should not have gone backwards," Senator Patrick said.

The latest Ipsos Issues Monitor found 32 per cent of respondents considered health their biggest concern, while 31 per cent ranked cost of living their number one challenge - two issues that have stood out in the election campaign.

Crime came third with 25 per cent, while the environment scored 23 per cent, up from 14 per cent at the time of the July 2016 election.

A separate poll commissioned by welfare lobby group, the Australian Council of Social Service (ACOSS), found nearly three quarters of Australians want to see an increase in Newstart.

A majority also held concerns about the tax cuts announced in the federal budget, preferring better funding for services, such as health, education, and aged care.

Australian Associated Press