Despite recent gains, top 6 opposition heads failing to capitalize on veteran leader's relative weakness, impeded by his stranglehold on media and courts

Though Ekrem Imamoglu unlikely to face jail time, court ruling disqualifies him from political office -- preventing challenge to Erdogan for presidency

Opposition candidate Ekrem Imamoglu wins re-run of mayoral vote in landslide victory seen as blow to Turkish leader Recep Tayyip Erdogan

New mayoral election called after ruling AKP party alleged corruption caused its shock defeat in previous vote

Erdogan's AKP party complains of irregularities after losing control of Turkey's largest city for the first time in 25 years; new vote set for June 23