Supporters of Peruvian presidential candidate Ollanta Humala celebrate after early exit polls showed him leading after the voting stations closed, in downtown Lima June 5, 2011. Left-wing former army commander Ollanta Humala had a narrow lead over right-wing lawmaker Keiko Fujimori in Peru's presidential election on Sunday, exit polls showed. REUTERS/Pilar Olivares (PERU - Tags: ELECTIONS POLITICS)