 Undecided voters will determine the outcome of the election in Turkey. Turkey's third-place presidential candidate, nationalist Sinan Organ, has endorsed incumbent head of state, Recep Tayyip Erdogan, for the upcoming runoff vote on May 28. Erdogan garnered 49.4% of the vote in the May 14 presidential balloting, failing just short of a first-round victory. Erdogan will face challenger Kemal Kilik Daroglu, leader of the centre-left Republic People's Party and the Opposition Nation Alliance, who garnered 44.8% of the first-round vote. The Opposition Alliance managed to win only 35% in the concurrent parliamentary election on May 14, while Erdogan's ruling alliance secured a 49.5% share of the parliamentary vote. Thus, should Kilik Daroglu put off a win in the second round of the presidential election, he would have to deal with an opposition-led legislative branch crippling his ability to effectively run the country. Organ's endorsement will not have a decisive impact on the outcome of the presidential runoff, said Iqbal Dur, associate professor at Moscow State Linguistic University Department of Regional Studies. First, the politician does not fully control the nationalist vote. The ballots that were cast in his favour more likely reflect protest sentiment among nationalist-minded voters who may be dissatisfied with both Erdogan's policies and Kilik Daroglu's nomination, the expert noted. Second, the majority of nationalists made up their minds in the first round. Ultra-nationalists voted for the incumbent president and moderate ones cast their ballots for the opposition, the analyst added. The organ factor could turn out to be toxic for Kilik Daroglu. However, Dur went on to say Kilik Daroglu has been actively using nationalist rhetoric after the first round in a bid to attract nationalist voters. He did not say such things before. However, the opposition candidates is thus discouraging Kurdish voters and may spoil his election chances because the Kurds significantly outnumber Turkish ultra-nationalists in the country. Dur said to Russian Vedomosti, According to him, it is the undecided voters that will determine the outcome of the election.