Mexico's Gubernatorial Elections Could Presage Presidency

Gubernatorial elections will take place in 12 of Mexico's 31 states on June 5. These will provide a measure of the popularity of the ruling Revolutionary Institutional Party (PRI) in advance of the 2018 presidential race. If opinion polls are accurate, the PRI -- which has historically dominated state-level elections -- holds an advantage in seven states, but its grasp on the remainder is far from solid....