We shall see whether Mexico has evolved politically to the point where leadership of the country can peacefully pass from one party to another, back and forth, as it does in the U.S. I'd like to believe they have reached that point, but it's too early to be certain. The transition from PRI to PAN was peaceful.
One interesting feature of the 2012 presidential race is that the PAN has nominated a woman, Josefina Vazquez Mota. That is an interesting tactic in a country noted for machismo.
