**SNIP** How long Bill's restraint lasts this time is anybody's guess. So far, he is being cautious and, in a burst of humility, is even raising doubts about his own political powers. "I've told Hillary that I don't think I'm good [at campaigning] anymore, because I'm not mad at anybody," he said to Town & Country Magazine recently. "I'm a grandfather, and I got to see my granddaughter last night, and I can't be mad." He said his role in his wife's campaign will be mostly as a "backstage adviser to her until we get much, much closer to the...