Many may think that all U.S. presidents have a perfect moral compass, but the truth is they make mistakes too — including being unfaithful to their wives.

Many may think that all U.S. presidents have a perfect moral compass, but the truth is they make mistakes too — including being unfaithful to their wives.
Every U.S. presidential election cycle has its key players—candidates, advisors, media moguls—but few have garnered the mystique of Allan Lichtman, the historian with an almost supernatural knack for predicting election outcomes.