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Tasmania's Liberals will govern with 15 seats in the state's 25-member lower house, final election counting has confirmed.

Led by Will Hodgman, the party romped to power at the March 15 poll but three seats had remained in doubt until the count was completed.

The Liberals have grabbed an unprecedented four of the five seats in the electorate of Braddon in the state's northwest.

The party has won three seats in Bass, Franklin and Lyons and two in Denison.

Five members are returned in each seat under Tasmania's unique Hare-Clark voting system and the state's five electorates are the same as their federal seats.

Prior to the election each seat had two Labor, two Liberal and one Greens MP.

The ALP will have seven members in the house after former ministers David O'Byrne and Brian Wightman missed out, along with rogue backbencher Brenton Best.

Mr Best had called for Premier Lara Giddings to quit in the lead-up to the campaign, criticising the ALP's power-sharing deal with the Greens.

The Greens' representation has shrunk from five seats, including two cabinet ministers before they were sacked in January, to three MPs.

They will lose their status as a parliamentary party, which is likely to mean a reduction in resources.

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Tasmanian Liberals secure big majority