Turkish citizens living abroad have begun voting in the presidential runoff election between incumbent Tayyip Erdogan and challenger Kemal Kilicdaroglu. The election, which will take place on May 28, was triggered after Erdogan failed to secure the 50% of votes needed to win outright in the first round. Some 3.4 million Turks are eligible to vote abroad, with Germany home to the largest Turkish diaspora. Kilicdaroglu won 44.88% of the vote in the first round, with Erdogan on 49.52%. The third-placed candidate, Sinan Ogan, could play a decisive role if he chooses to support one of the two remaining candidates.