There's a real crowd at Radio City, complete with scalpers, and lines around the block for Elton John and the Clintons. Toward the back of one line: Frank Luntz, Lanny Davis, and Doug Schoen. ("I used to be in business with Mark Penn," Schoen joked.) Inside, Bill Clinton introduced his wife, thanked the packed house for contributions to keep the race going, and asked for more, to shouts of "We miss you, Bill." "If you know anybody who didn’t come here tonight who could send some money over the Internet …," he said. "What I want you to know is,...