Tunisia holds a presidential election Sunday with no real opposition to incumbent Kais Saied, widely tipped to win as his most prominent critics, including a key contender, are behind bars. Three years after a sweeping power grab by Saied, the election is seen as a closing chapter in Tunisia’s experiment with democracy. The North African country had prided itself for more than a decade for being the birthplace of the Arab Spring uprisings against dictatorship. Polling stations open at 8:00 am (0700 GMT) and close at 6:00 pm (1700 GMT). Preliminary results should come no later than Wednesday bu…