Duke professor Pope 'Mac' McCorkle examines the earlier North Carolina primary.
The Associated Press
Political scientist Michael Munger: “Hillary Clinton's negative rating is over 50 percent. The rule is, you can't win if it's over 40. So Biden's biggest positives are Clinton's negatives.”
Associate professor David Schanzer examines a Joe Biden presidential run
Allen Frances, professor emeritus of psychiatry and behavioral sciences, on why diagnosing from afar is unethical.