Pundits who once pronounced Republican voters satisfied with the field of presidential contenders may have spoken too soon. Herman Cain’s difficulties in handling a flurry of sexual harassment accusations–albeit launched by an overzealous, unfair mainstream media–have shaken confidence in his candidacy. Gov. Mitt Romney’s increasingly bold policy pronouncements may be too little, too late to convince the conservative base. Gov. Rick Perry seems to have faded, and Newt Gingrich’s recent rise may not be big enough to establish him as the latest alternative to Romney. The other candidates are still trying to break into double digits, but aside from Ron...