Mexico: Ready For Prime Time? Mexico's political left has never had much power--but led by Mexico City Mayor Andres Manuel Lopez Obrador, it's poised to make its mark.

Byline: Scott Johnson (With Maria Amparo Iasso in Mexico City)

Mexico's Guerrero state, which abuts the Pacific coast, has long been characterized by the gaudy luxury of Acapulco--a wealthy tourist town that caters to thousands of American vacationers each year. For just as long Guerrero has been a bastion of backroom political dealmaking; indeed, until last week, it had always been governed by a politician from the Institutional Revolutionary Party, or PRI. In what may portend another signal political shift in Mexico, voters swept the PRI incumbent out of office, electing instead a former mayor of Acapulco, Zeferino Torreblanca, who ran on a left-wing ticket ...