Opposition candidate leads Istanbul mayor race: election chief Opposition party members celebrate alongside Ekrem Imamoglu after the opposition candidate (CHP) for Istanbul mayor was reported to lead by nearly 28,000 votes after the weekend local election, according to Supreme Election Board (YSK) chairman Sadi Guven. IMAGES of celebrations after the vote result AND SOUNDBITES of Ekrem ImamogluCOMPLETES VID1326178_EN