Tayyip Erdogan's challenger in Turkey's presidential race has sharpened his tone on migrants on Thursday, vowing to send all migrants back to their countries once elected in a May 28 runoff vote.
Kemal Kilicdaroglu, the candidate of a six-party opposition alliance, won 45% support in Sunday's vote while Erdogan got 49.5%, falling just short of the majority needed to avoid a runoff vote.
