The ruling party in Turkey was dealt a major setback on Sunday as the re-run of Istanbul’s mayoral election showed the same result they had previously contested. The AKP, party of Turkish president Recep Tayyip Erdogan, had contested and annulled the surprise victory by opposition party CHP’s candidate Ekrem Imamoglu in March. Imamoglu’s victory in March, over former prime minister Binali Yildirim of the AKP, had a narrow margin of 13000 votes, and the electoral authority held that the election was invalid due to issues in the staffing at ballot…