By ramming through his new constitution, President Kais Saied has cemented his role as master of Tunisia, heralding a new political era after a brief, difficult experiment with democracy.

An overwhelming "yes" vote in a referendum that brought only about a quarter of voters into polling booths has enshrined a new political system in which the president has nearly total power and few formal checks on his authority.

Glum opponents of his plans fear that Tunisia has now joined the club of failed democracies after leading the uprisings against autocratic rule with a revolution that unleashed the 2011 Arab Spring.