Turks are heading to the polls this Sunday, for their first presidential election. Until now, Turkey's president was chosen in parliament. Among the contenders is current Prime Minister Recep Tayyip Erdogan. He's counting on the support of Turkish nationals living abroad: for the first time, they're also casting their ballots and have already started voting. Our France 24 team sent us this report from Berlin, home to one of the largest Turkish communities in the world.