Maybe another election somewhere had this much killing, but it's bad news down in Mexico. I spoke with a Canadian friend living in central Mexico and it was the violence that he kept talking about. This is another example: Tailed by trucks of heavily armed soldiers, four caskets floated on a sea of hundreds of mourners. Neighbors peered nervously from their homes as the crowd pushed past shuttered businesses, empty streets and political campaign posters plastering the small Mexican town of Huitzilac. Days earlier, armed men in two cars sprayed a nearby shop with bullets, claiming the lives of eight...