The June 2019 Istanbul mayoral election was held on 23 June 2019. It was a repeat of the March 2019 mayoral election, which was annulled by the Supreme Electoral Council (YSK) on 6 May 2019. The original election had resulted in a narrow 0.2% margin of victory for opposition candidate Ekrem İmamoğlu, causing the governing Justice and Development Party (AKP) to successfully petition for a by-election.