Lopez Obrador, presidential candidate for the Party of the Democratic Revolution, looks on during a news conference in Mexico city

 
Lopez Obrador, presidential candidate for the Party of the Democratic Revolution, looks on during a news conference in Mexico city
Andres Manuel Lopez Obrador, presidential candidate for the Party of the Democratic Revolution (PRD), looks on during a news conference in Mexico city July 12, 2012. The runner-up in Mexico's presidential election said on Thursday he will ask the country's electoral tribunal to void the results, arguing that the winner broke campaign finance laws to buy votes. Lopez Obrador came in 3.3 million votes behind Enrique Pena Nieto from the centrist Institutional Revolutionary Party (PRI), according to the official count from the July 1 vote. REUTERS/Edgard Garrido