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U.S. Presidential hopeful Barack Obama (D-IL) speaks as beads of sweat run down his face in a hot auditorium in Kokomo, Indiana, on Friday, April 25, 2008.  Voters in the city are considering the issues important to them in the lead-up to the May 6th Democratic Presidential Primary in the state. (Photo by: Yana Paskova for The New York Times)..Assignment ID: 30061060A.