E.J. Dionne: When does the war on the poor end?

If you're a Republican, fraying the social safety is simply how you do. Holding fast to your pledge to Grover Norquist is the one way, the only way. Whether you're a Tea Party young gun or a seasoned Senator, the lessons of Indiana--where Sen. Dick Lugar (not a Norquist pledge-signatory) lost his primary to Tea Party darling Richard Mourdock--ring strident and terrifying: stick to the script. Your political life depends on it.