Does a “Divisive” Primary Harm a Candidate's Election Chances?

It is a rare election year when the nation's attention is not focussed on at least one party primary where the struggle for the nomination is highly competitive and the result a matter of doubt until the last precincts are reported. In many such cases the other party has settled on its own standard-bearer and thus sits back contentedly while the opposition wages its internecine battle before a rapt public. In recent years as varied personages as Estes Kefauver, Richard Nixon, and Charles Percy found themselves engaged in a hard-fought primary campaign to secure their nomination or renomination for state office.