A Tunisian appeal court on Thursday upheld an 18-month prison sentence handed down to presidential candidate Ayachi Zammel, his lawyer said, two days before the vote is held.
Zammel, who has been in prison for a month, is one of three candidates running for the presidency, along with current President Kais Saied and politician Zouhair Maghzaoui.
Tunisians head to the polls Sunday.
Fourteen hopefuls were barred from joining the race, after election organizers ruled they had failed to provide enough signatures of endorsement, among other technicalities.
Some have been jailed after being convicted of forging signatures.