The blood is in the water. The game is afoot. And the Republicans are brawling. While Democrats are usually viewed as the undisciplined, fractious party, it is Republicans who sharpen their knives and slice each other up when the White House is at stake. The struggle is between two groups within the GOP. The establishment finally recognizes that the party must broaden its base. If the party appeals to only white, Christian conservatives, it will wind up as a regional party, capable of winning Senate and House seats but incapable of winning a national election. We must nominate a presidential...