Saturday's poll, the second in 16 months for the state, was called after minority Liberal Premier Jeremy Rockliff lost a parliamentary no-confidence motion in June.
The latest opinion survey suggests the Liberals will pick up more seats than Labor but neither will reach the 18-seat mark required for majority.
More than 100,000 people have voted early - about a quarter of Tasmania's 412,000 enrolled voters and an increase of 30,000 from the same point in the last campaign.
Labor leader Dean Winter held a barbecue with party faithful in Hobart on Friday morning, while Mr Rockliff will attempt to drum up support in the state's northwest.
Both leaders have continued to blame each other for the snap poll, which has been dubbed the election no one really wanted.
Mr Rockliff has campaigned under the slogan "finishing the job for Tasmania".
The no-confidence motion, put forward by Labor and supported by the five-seat Greens and three crossbenchers, was critical of ballooning budget debt and infrastructure stuff-ups.
"Dean Winter put Tasmania's progress at risk when he forced this unnecessary election," Mr Rockliff said.
The election could have been avoided if Mr Rockliff stepped down as Liberal leader, and the parliament gave their support to a different premier.
At the sole leaders' campaign debate on Wednesday, Mr Winter said Mr Rockliff was "recklessly bankrupting" the state and he would "clean up the mess".
Tasmania's debt is tipped to more than double to $13 billion by 2027/28.
The Liberals hold 14 seats in the 35-seat lower house, while Labor, which has been in opposition for 11 years, hold 10.
Both parties have ruled out doing a deal with the Greens to govern, but have indicated they will work with independents.
A DemosAU poll conducted for radio station Pulse Tasmania had support for the Liberals at 35 per cent, down from their 37 per cent of the vote at the March 2024 poll.
Labor was on 25 per cent, a drop from their 2024 result of 29 per cent, with support for independent candidates rising to 20 per cent.
There are a record 44 independents running, with incumbents Kristie Johnston and Craig Garland, who voted no-confidence in Mr Rockliff, expected to return.
Anti-salmon campaigner Peter George, who gave sitting Labor MP Julie Collins a fright at the federal election, has thrown his hat into the ring.
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