ISTANBUL (Reuters) -- Turks dealt President Tayyip Erdogan and his party their biggest electoral blow on Sunday in a nationwide local vote that reasserted the opposition as a political force and reinforced Istanbul Mayor Ekrem Imamoglu as the president's chief rival.
With most of the votes counted, Imamoglu led by 10 percentage points in the mayoral race in Istanbul, Turkey's largest city, while his Republican People's Party (CHP) retained Ankara and gained 15 other mayoral seats in cities nationwide.
