Serbia's long-time leader Aleksandar Vucic has conceded defeat in a snap election, handing victory to a student-led movement that built mass support by pledging to fight against graft and reverse democratic backsliding. The Student List won more than two million votes in the Balkan country of 6.5 million people, Mr Vucic told his supporters in Belgrade, about 90 minutes after the polls closed on Sunday. That result would give the movement a simple majority in the 250-seat parliament.