Sunday's referendum on Guinea's constitution could see a return to civilian rule after four years under a military junta. The vote will determine whether military leader Mamadi Doumbouya will be allowed to run for president. As polls opened at 7 a.m. in Conakry’s Kaloum neighborhood, voters lined up to cast their ballots in Guinea’s referendum, paving the way for a return to civilian rule four years after former president Alpha Conde was deposed and the military took power. Many people in Guinea, disillusioned by previous regimes, have been enamored by Doumbouya’s vision of a prosperous, developed Guinea. There are 6.7 million eligible voters, and the referendum needs a voter turnout of at least 50 percent to pass.