PRESIDENT Kais Saied has won a landslide victory in Tunisia’s election.

The win on Sunday keeps Mr Saied in power after a first term where opponents were imprisoned and the country’s institutions overhauled to give him more authority.

Tunisia’s election authorities said Mr Saied received 90.7 per cent of the vote in a low 28.8 per cent turnout.

In a speech at his campaign headquarters President Saied said: “We’re going to cleanse the country of all the corrupt and schemers.”

University of Tunis law professor Sghayer Zakraoui, a critic of the president, said Tunisian politics were once again about “the absolute power of a single man who places himself above everyone else.”

Professor Zakraoui said the election results were reminiscent of Tunisia under President Zine El Abidine Ben Ali, who ruled for more than 20 years before becoming the first dictator toppled in the Arab Spring uprisings. 

The closest challenger, businessman Ayachi Zammel, won 7.4 per cent of the vote after sitting in prison for the majority of the campaign while facing multiple sentences for election-related crimes.

The president’s most prominent challengers were jailed or kept off the ballot, leading to a boycott of the poll by opposition parties.