I’d LOVE to take a cross-section of Obama supporters who are college students, and ask them questions similar to the way the interviewer on Howard Stern did. Asking them questions about his voting record with implied opposite answers, and see if any of them would catch it. It would be good if it were an issue a little less obvious than his running mate, but not grossly obscure either.
It’s not easy to come up with one though, because he directly contradicts himself with certain ones like campaign finance reform.