Independent senator Jacqui Lambie admits polling supports her re-election but isn't taking her upper house seat for granted.
The outspoken Tasmanian politician could reach a second quota which would see running mate Steve Martin start jetting to Canberra from the southern state, boosting Senator Lambie's influence.
"It's up to Tasmanians - it's their big day to make their voices heard. I'm hoping they will give Tasmania the opportunity to have the balance of power ... that way we can deliver more for Tasmania," she told ABC TV on Saturday morning from outside a Launceston polling booth.
Senator Lambie won her senate spot in 2013 as part of Clive Palmer's party and she said parting company with the mining millionaire was the right decision.
"That's really worked in my favour - there's no way that if I was still running under that banner ... I'd be finished today," she said.
