DAR ES SALAAM - There were few voters at polling stations in Tanzania's biggest city on Wednesday as the main challengers to President Samia Suluhu Hassan were either jailed or barred from running.
The government and police made repeated threats that protests would not be tolerated, and stationed tanks around the commercial capital Dar es Salaam on Wednesday to prevent any unrest.
But the heightened security may have backfired, with voters worried about showing up.
Polling stations in some of the city's busiest areas were virtually empty an hour after opening, AFP journalists saw, despite being busy at that time during previous elections.
"We are going to mobilise people from the streets and their homes to come and vote," an official from the ruling Revolution Party (Chama Cha Mapinduzi: CCM) in Temeke district of Dar es Salaam told AFP, on condition of anonymity.
"We need to rescue the situation because some are hesitating," the official added.
President Hassan is determined to cement her position with an emphatic victory that will silence critics within her own party, analysts say.
Her main challenger, Tundu Lissu, is on trial for treason, facing a potential death penalty. His party, Chadema, is barred from running.
The only other serious candidate, Luhaga Mpina of ACT-Wazalendo, was disqualified on technicalities.