During the Pennsylvania primary campaign, Barack Obama made a rather charitable gesture not only toward his Democratic rival but toward the presumptive Republican nominee as well. "You have real choice in this election," he told a crowd in Reading. "You know, either Democrat would be better than John McCain, but ... all three of us would be better than George Bush." That was all it took to set off Hillary Clinton. She rattled off a list of McCain's misguided positions, asking her audience over and over, "Is that better than George Bush?" She concluded, "We need a nominee who will...