After 12 years, people across every electorate voted for change at the polls yesterday.

But just how big a change might not be known for nearly two weeks.

Despite Labor losing two sitting members early in Southern-based electorates and the Liberals recording the most votes overall, first-preference counting last night was not able to indicate a clear result other than minority government.

This will come down to two undecided seats in Braddon and Denison.

Opposition Leader Will Hodgman spoke first to the tally room at Hobart's Wrest Point, flanked by his wife Nicky.

Mr Hodgman predicted the Liberals would win 10 seats, Labor 10 and the Greens five and declared his party was ready to govern.

"The Liberal Party has won the most votes across Tasmania - more people have voted Liberal than for any other party and there has been a strong move away from Labor," he said.

"Tasmanians have voted for change and we will respect the will of Tasmanians ... but we expect to be given the opportunity to form the next Government of Tasmania."

Greens leader Nick McKim was confident of holding the balance of power and spoke of his preparedness to co-operate with whichever major party formed government.

It was the Greens' biggest vote ever, not just in a Tasmanian election but across Australia.

This came from best-ever first preference results from candidates like Kim Booth in Bass, with 8132 votes.

Mr Booth had only just scraped into Parliament in the past two elections from preference cut-ups.

Mr McKim was on 13,978 last night and Denison Greens MHA Cassy O'Connor polled 9273.

With Lyons Greens MHA Tim Morris returned, the Greens have retained four seats and are a chance of winning additional seats in Braddon and Denison.

"We are humbled by the level of support - it came about because we listened to Tasmanians and heard their concerns," Mr McKim said.