From the brilliant Dave Weigel (who really needs to get his heart checked):
Time and again, Washington is shocked by two incredibly well-known facts about House Republicans. One: They believe all of that stuff they tell their conservative audiences, from the town halls to the Sean Hannity remote feed. They ran in 2010 promising never to raise taxes and to take a samurai sword to the budget. Whatever Paul Ryan asked them to cut, they voted to cut. Two: Most of these members come from safe districts where the only threats to re-election are primary challenges or death by natural causes.