With his major opponents imprisoned or left off the ballot, Tunisian President Kais Saied faces few obstacles to winning reelection on Sunday, five years after riding anti-establishment backlash to a first term.

The North African country’s Oct. 6 presidential election is its third since protests led to the 2011 ouster of President Zine El Abidine Ben Ali — the first autocrat toppled in the Arab Spring uprisings that also overthrew leaders in Egypt, Libya and Yemen.

International observers praised the previous two contests as meeting democratic norms. However, a raft of arrests and actions taken by a Saied-appointed election authority have raised questions about whether this year’s race is free and fair. And opposition parties have called for a boycott.