Uruguay strengthened South America’s political tilt to the left, electing the country’s first leftist president as part of a regional shift by voters disenchanted by U.S.-backed free-market policies many blame for recent economic upheaval. Municipal elections also reaped gains for left-leaning governments in Venezuela and Chile. In Uruguay, the victory of socialist Tabare Vazquez in Sunday’s vote highlighted a dramatic change for a staunch U.S. ally. Full Story