Turkey's opposition Republican People's Party (CHP) candidate Ekrem İmamoğlu has claimed victory in Istanbul's do-over election, according to unofficial results.
Leading at 54 percent with over 99 percent of ballot boxes opened, İmamoğlu held a victory speech in Istanbul.
Voting started at 8.00 a.m local time (0500GMT) in 31,342 ballot boxes across 39 districts of Istanbul.
Binali Yıldırım, candidate of the ruling Justice and Development (AK), and Ekrem İmamoğlu of the opposition Republican People's Party (CHP), will vie to run the metropolitan municipality of Turkey's most populous city after a previous vote on March 31 was annulled by the country's top election council last month.
Millions of Turkish voters cast their votes nationwide on March 31 in local elections to choose mayors, city council members, mukhtars (neighborhood officials), and members of elder councils for the next five years.
On March 31, the turnout was 83.88%, six percentage points lower than the previous local elections of March 30, 2014.
