Republican Herman Cain suspends his campaign after accusations of sexual harassment, groping and an extramarital affair. He tells supporters in Atlanta that he will change Washington from the outside.Herman Cain's unlikely and ill-fated presidential campaign proved that one rule is immutable even in this rambunctious campaign year: Political outsiders may be an attractive alternative to career politicians, but all the fresh approaches and folksy charm in the world can't make up for inexperience and untenable baggage.