The Tasmanian election has delivered a horror result for the Greens, with the party looking at its worst result in the state in almost three decades.

The Greens have so far only secured one seat in the parliament and are currently sitting on 10 per cent of the statewide vote.

While Tasmania is the birthplace of the Greens, it's now trailing Victoria in support and representation.

The leader of the Tasmanian Greens, Cassy O'Connor, said she was "saddened" by the result.

"The result is poor," election analyst Antony Green said.

"Their vote has halved over two elections, the vote is down below the level of 1998.

"So it's a winding back right to the 1980s and the early days of the Greens."

In 2010, the party won five seats and it went into this election with three.

Ms O'Connor's is currently the only secure seat, but she's still hopeful of more.

"I think we will hold Franklin," Ms O'Connor said.

"I haven't given up on Bass yet but obviously it's been a really hard election for the Greens."

The Greens incumbent in Franklin, Rosalie Woodruff, is preparing for a long wait to see if she will be returning.

"I have to wait and see, it's going to come down to preference flows and I think that will take another 10 days," Ms Woodruff said.

Greens blame Liberal 'onslaught'

The lack of a major environmental issue in the campaign and Labor taking on its pokies policy have played a part in the Greens slump.

But the party is placing the majority of the blame at the feet of the Liberals.

"We were massively outspent, we were up against a big anti-green, pro-majority campaign," Ms O'Connor said.

"There's a reason parties like the Liberals invest in negative advertising, it works.

"I think the real factor has been all the money, the millions of dollars, we were just up against this onslaught, it was relentless."

Throughout the campaign, the Greens raised concerns about the amount of donations the Liberal Party may have received from the gaming industry.

The Liberals dismissed it as "Greens hypocrisy" and insisted its policies weren't for sale.

But Ms O'Connor stood by the sentiment on election night.

"I genuinely think they bought their way into government," she said.

However she conceded she needed to take some responsibility for the result.

"Any leader of a political party that's had a swing against them has to accept personal responsibility for that and I do," she said.

"But I'd have loved to have seen the result if we had a level playing field."

Victoria surges as Tasmania stalls

The slump in the Tasmanian vote comes as the Greens continue to surge in Victoria.

The party was hoping to take another federal seat there in the Batman by-election in a fortnight.

"The Greens are doing much more strongly in places like Victoria, especially in inner-city seats," Mr Green said.

"But to be honest Victoria is a larger place, the Greens are doing nearly as well in parts of inner Hobart, it's just that Tasmania is a much smaller state, so that doesn't correspond to single electorates."

This is the first state election without a Tasmanian at the helm of the national Greens, but a stalwart of the party says the apple isle remains its heartland.

Former Greens leader Bob Brown remains upbeat about the party's future in Tasmania. ( ABC News: Natalie Whiting )

"This power of the Greens has come out of Tasmania, it's extraordinarily strong and resilient here," former leader Bob Brown said.

He is confident that the party's vote will end up higher than 10 per cent once the final votes are counted.

"It'll be better than the 98 vote," he said.

"Amongst other things there's the bushwalker vote — that is absentee voters, they're tertiary educated, they're travelling around the world, they love this island.

"We see it time and time again, those late votes coming in, tend to bolster the Greens."

Mr Green agrees the party's future in the state is far from at risk.

"The Greens aren't going to go away, they have an established base in Tasmania, but it's much more of a southern base now.

"They've got a lot to look at it in terms of how their vote can recover in the future."