Thousands of supporters of Andres Manuel Lopez Obrador, presidential candidate for the Democratic Revolution Party (PRD) gather at the main Zocalo plaza to participate in Lopez Obrador's final ... more 
Thousands of supporters of Andres Manuel Lopez Obrador, presidential candidate for the Democratic Revolution Party (PRD) gather at the main Zocalo plaza to participate in Lopez Obrador's final campaign closing rally in Mexico City, Mexico, Wednesday, June 27, 2012. Next July 1, Mexico will hold presidential elections. (AP Photo/Dario Lopez-Mills) less 
1 / 31
Associated Press | Photo By Dario Lopez-Mills
Wed, Jun 27, 2012 10:46 PM EDT