It sounds silly, but when "Hillary Clinton" is matched up against Sen. John McCain in a hypothetical presidential election, she loses by a single percentage point. But if pollsters refer to her as "Hillary Rodham Clinton," she trounces the Arizona Republican by 7 percentage points. According to an Opinion Research Corp poll conducted for CNN, which asked 506 adult Americans whom they preferred among potential 2008 presidential candidates, they chose Hillary Rodham Clinton to McCain by a 51 percent to 44 percent. But when the "Rodham" name was dropped, McCain had a 1 percentage point advantage, 48 percent to 47...