Winning for the sake of winning is an excellent short-term tactic, but a lousy long-term strategy. Just look at the consequences of the 2006 congressional elections, when the GOP lost control of both houses of Congress.
A Republican majority is only as useful as the policies that majority produces. When those policies look a lot like Democratic ones, the base rightly questions why it should keep Republicans in power. As the party gears up for elections in the fall, it ought to look closely at the losses suffered under a political strategy devoid of principle. Otherwise, it can look forward to a bad case of déjà vu.