Tadic is a pro-Western reformer while Nikolic -- formerly a minister in Slobodan Milosevic's government -- represents a party whose leader, Vojislav Seselj, is being tried at the UN war crimes tribunal at The Hague.
Tadić je prozapadni reformista, dok Nikolić -- nekadašnji ministar u vladi Slobodana Miloševića -- predstavlja stranku čijem se lideru Vojislavu Šešelju sudi pred Haškim tribunalom za ratne zločine.