The battle for the soul of the Republican Party has been cast as between "conservatives" and "moderates," between "grassroots" and "the establishment," "Tea Party" and "RINOs." While we sort of know what we mean by all of that, those labels are imprecise, and often get in the way. The battle is between people who believe strategy trumps ideology, and those who believe ideals are paramount. It's between the Realists and the Idealists. If the Party is to survive, it's a battle that both sides must win.