I think the case for [repeated government shutdowns] happening is twofold. One is that conservative politics is now much more dominated by a set of overlapping, competing media figures who are more interested in ratings than in majorities. The other is that if John Boehner has the courage of my convictions, he’ll believe that a government shutdown will risk sending the economy into a double-dip recession and that ultimately Barack Obama will be blamed for the bad results regardless of what polling says in the moment.