One of the worst features of the election primary system in our polarized “Red vs. Blue” time is the tendency of primary voters to flock to the candidate they most want to “destroy” the other party, not the candidate best positioned to do so. Let’s say a zombie is scratching at your door. You’ve got a shotgun, a handgun and your favorite frying pan. The shotgun has the greatest chance of success, the handgun — if one is careful and skilled — has a solid chance of working, and the frying pan? It probably won’t dispatch the threat, but come...