Braddon by-election neck-and-neck

Ethan James

Bill Shorten has brought an apple shortcake to morning tea at an aged care centre in Devonport but it may take bigger sweeteners to win over voters in Braddon.

The federal opposition leader wrapped up a stint in the knife-edge northern Tasmanian seat on Tuesday as the race to a 'Super Saturday' of by-elections on July 28 heats up.

Labor candidate Justine Keay was alongside her party head, the pair meeting residents at Meercroft Care.

They pledged $800,000 under a Labor government for a 'mini-hospital' TAFE training centre.

"Unlike Malcolm Turnbull, we don't believe that these people should go and get a better job," Ms Keay said of health workers.

Ms Keay took Braddon from Liberal Brett Whiteley in 2016 with a slim margin of 2.2 per cent before being forced to resign due to her dual citizenship.

Mr Whiteley is hoping to win the seat back.

Recent ReachTel polling shows the Liberals have a 42.9 per cent to 36.3 per cent primary-vote lead.

Political analyst Kevin Bonham told AAP the race is too tight to call in an electorate that has gone Labor-Liberal-Labor over the past three elections.

"If you took those numbers as gospel, they'd probably only just win on preferences," he said of the Liberals chances.

Health has formed a big part of Labor's pitch so far, with money for a Burnie mental health facility announced at their weekend launch.

On Monday Malcolm Turnbull was on the state's west coast, spruiking jobs, growth and plans to reopen a west-coast nickel mine alongside Premier Will Hodgman.

Swinging voter Wally Derrico, 95, is on the fence but leaning towards the Liberals.

"Politicians, they only come at the right time," he said of Shorten's visit.

"I said to him 'why is it that you come when there's an election coming up?'"

George Wallace, though, is planning on staying a life-long Labor voter on the back of their health promises.

"I think Justine was quite good, she'll get my vote," the 90-year-old said.

"She's an honest girl, if someone's honest I'll listen to them."