Tasmanian senator and former federal tourism minister Richard Colbeck has lost his Senate seat, weeks after Australians took to the polls.

Key points: 4 Liberals, 5 Labor, 2 Greens and 1 independent for Tasmania in the Senate

4 Liberals, 5 Labor, 2 Greens and 1 independent for Tasmania in the Senate Mr Colbeck dumped after representing Tasmania and the Liberals for over 14 years

Mr Colbeck dumped after representing Tasmania and the Liberals for over 14 years Senator Singh say she holds no resentment for relegation to sixth place on the Labor ticket

Mr Colbeck was Tasmania's only minister, holding the Tourism and International Education portfolios in the last parliament.

But he was relegated to the unsafe fifth position on the Tasmanian Liberal Party ticket.

After the distribution of preferences today, it has become clear Mr Colbeck has lost the battle for the 12th Senate spot to the Greens' Nick McKim.

Labor's Lisa Singh has also won a seat.

A massive below-the-line vote saw Senator Singh re-elected, despite her relegation to the sixth position on her party's ticket in favour of a union boss.

She took the 10th Senate spot ahead of her colleague Senator Catryna Bilyk, who has also been returned.

Mr Colbeck said he was proud to have represented Tasmanians and the Liberal Party for more than 14 years.

"It has been said many times recently that politics is governed by the hard and fast rules of mathematics — either you have the numbers or you don't," he said.

"It says a lot about our country that you can come from a dairy farm with a vocational education as a tradesman to become a representative in the Parliament and serve at the level I have served, as a Minister in the Federal Government."

Mr Colbeck said for much of his tenure he had been the only federal Liberal representative on the north-west coast of Tasmania.

Singh returns to Senate with below-the-line votes

Senator Lisa Singh (pictured) was not congratulated by fellow Labor senator Catryna Bilyk. ( ABC News: Alex Blucher )

Senator Singh attracted more than 20,000 below-the-line votes, allowing her to retain her seat from sixth on the party ticket.

She said it was a historic result.

"I'm very pleased with the campaign I've run, I ran a dignified campaign based on integrity and respect for others," she said.

"We have shown that the impossible is possible."

Senator Singh has retained her seat, but lost her position as a parliamentary secretary.

She had previously blamed factional deals for her relegation on the ticket, but said she harboured no resentment towards the party for her relegation on the ticket.

"Not at all, I am part of the Labor team, this is about getting back on and fighting the Turnbull Liberal government," she said.

Fellow Labor senator Catryna Bilyk has issued a press release congratulating all of Labor's senators except for Senator Singh.

Tasmania's representation in the Senate will be made up of the Liberals' Eric Abetz, David Bushby, Stephen Parry, and Jonathon Duniam; Labor's Catryna Bilyk, Carol Brown, Helen Polley, Lisa Singh and Anne Urquhart; independent Jacqui Lambie and The Greens' Peter Whish-Wilson and Nick McKim.