For those who believe in miracles, there is the legitimate possibility that John McCain could win the Republican presidential nomination. If so, he’ll make Bill Clinton’s comeback kid of 1992 look like a piker. Of course, the Republican senator from Arizona needs a series of events to break his way, but things are moving in that direction. Remember, McCain entered the 2008 presidential race at the head of the pack. But there was significant resistance to him in the grass roots, his early campaign was poorly managed and former New York Mayor Rudy Giuliani zoomed past in the polls while...