A woman dressed in typical attire casts

A woman dressed in typical attire casts her vote in a polling station in the municipal building of the San Bartolome, district of Tlacoula of Matamoros in Oaxaca on election day on July 1, 2012. Polls opened Sunday in for almost 80 million Mexican are expected to vote in Mexico’s presidential election, in which voters exhausted by violence seem prepared to bring the PRI, the party that ran the country for seven decades, back to office. Mexican presidents are elected by simple majority for six-year terms and are banned from running for re-election. AFP PHOTO/CARLOS SALINASCARLOS SALINAS/AFP/GettyImages