Supporters of Former prime minister and presidential candidate Cellou Dalein Diallo of the Union des forces democratiques de Guinee (UFDG) shout during the confrontation with partisans of Guinea's outgoing president, leader of Rassemblement du Peuple de Guinea (RPG) on a main road during the electoral rally of UFDG in Conacry, October 8, 2015. Guinea will hold its presidential election on Sunday. REUTERS/Luc Gnago