[B]eneath the profound novelties of the Democratic race lurk the same rifts that have characterized the party’s presidential contests for 40 years. Breaking down Tuesday’s vote, the old divisions of class, and the sometime divisions of age, are plain to see. Like Hubert Humphrey, Walter Mondale and Al Gore before her, Clinton is winning downscale and older voters, and the support of party regulars. Like Eugene McCarthy, Gary Hart and Bill Bradley before him, Obama has the backing of more upscale and younger voters, and independents. Obama carried the college towns. Clinton swamped him in working-class Manchester. Among voters who told the exit pollsters that they were getting ahead economically, Obama won 48 percent support and Clinton just 31 percent. But among voters who said they were falling behind economically – and there were twice as many of those as the ‘getting aheads’ – Clinton led 43 percent to 33 percent. She led Obama among voters from union households, and she led among voters who said the economy was the most important issue – which a plurality did.