Tomislav Nikolic, left, the nationalist Serbian Progressive Party leader and presidential candidate, and his wife, Dragica, center, cast their ballots at the presidential runoff elections in Belgrade,... more 
Tomislav Nikolic, left, the nationalist Serbian Progressive Party leader and presidential candidate, and his wife, Dragica, center, cast their ballots at the presidential runoff elections in Belgrade, Serbia, Sunday, May 20, 2012. Serbians voted Sunday in a presidential runoff election that pits pro European Union Boris Tadic against nationalist Tomislav Nikolic who wants closer ties with Russia and is threatening protests if he loses because of alleged ballot rigging. (AP Photo/ Marko Drobnjakovic) less 
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Associated Press | Photo By Marko Drobnjakovic
Sun, May 20, 2012 5:47 PM EDT