Tasmanian Labor Senator Anne Urquart questioned Mr Pearce's potential disappointment at being in Launceston, having breakfast with Prime Minister Scott Morrison, while Nationals Senator Steve Martin and Nationals Braddon candidate Sally Milbourne announced $200,000 for the Don River Railway Project in Devonport on Thursday. 

"You have to wonder - was Gavin Pearce dragged to Launceston on Thursday to clear the air for Sally Milbourne on the North West?" Senator Urquart said. 

"Just two weeks ago, Gavin Pearce and the Liberal party were briefed on the Don River Railway proposal, only for Steve Martin and the Nationals to announce funding while he's out of town.

"Gavin Pearce claims there is no bad blood, but he must be fuming.

"Who is Scott Morrison's pick for Braddon - Gavin Pearce or Sally Milbourne?

"The people of the North West and West Coast are sick of the cuts and chaos of the Liberals and Nationals."

Mr Pearce said the Liberals and Nationals were working together to roll out an exciting package of commitments to Braddon, as part of their campaign for the re-election of the Coalition government. 

"I'm not going to take lessons on unity from a senator who stabbed her colleague Lisa Singh in the back - twice!" Mr Pearce said. 

There were questions on Friday as to whether fresh Nationals candidate Ms Milbourne had benefited from profit under the Crown after being announced as a contender in the election race.

Cultivate Productions, of which Ms Milbourne was a director, received $300,000 from the federal government under a regional jobs program to develop a television and video production studio.

The funds, which would cover half of the project cost, would be used to create a kitchen studio and editing suites.

A Nationals Party spokesman said Ms Milbourne resigned as company director before she became a candidate.