Tasmania's volatile northwest is back in Liberal hands but the race for Bass to the east has tightened.
Farmer and former soldier Gavin Pearce paid tribute to the Scott Morrison-factor on Sunday after winning Braddon from Labor's Justine Keay.
But Bass, which includes Launceston, is one of seven seats nationwide considered to be in doubt.
The race got closer as voting continued in the afternoon, with Liberal Bridget Archer's lead over Labor incumbent Ross Hart reducing to less than one percentage point.
She is narrowly in front with 50.36 per cent of the two-party preferred vote but told reporters she was feeling optimistic about the result.
Mr Hart had conceded the seat on Saturday night.
Meanwhile, Mr Pearce paid tribute to the newly re-elected Mr Morrison, who made 10 trips to the state's northwest across the election campaign, including to both Bass and Braddon on polling day.
"I gained strength from that, I really did," he said at a lookout in Burnie.
"You only have to be around the guy - that enthusiasm is contagious. He had a vision. He turned us around and put us exactly where we needed to be."
Braddon has gone Labor-Liberal-Labor-Liberal at the past four federal polls.
Mr Pearce, who ran a first-time campaign on a platform of jobs and economic growth, was determined to buck that trend.
"I don' think it's a flash-in-the-pan at all," he said of his election, adding he was humbled by the community support.
Labor had positive news in Lyons, where Labor's Brian Mitchell held off independent and former Liberal Jessica Whelan.
Ms Whelan resigned from the Liberal Party during the latter stages of the campaign over anti-Muslim social media posts made in her name.
Further south, Labor's Julie Collins was retained in Franklin, while independent Andrew Wilkie was returned in the Hobart seat of Clark.
Outspoken Jacqui Lambie is likely to return to the Senate and has told media she intends to hold the Morrison government to account.
