When Republicans reached basic consensus about what they wanted to do [relative to Ryan’s plan], they then delegated the details to a small group of people who fleshed out the plan, it was then presented to the caucus and within a week they had the vote. Democrats, by contrast, put their health reform plans through an agonizing months-long process of public intra-party disputes. That gave people who didn’t care about the details tons and tons of time to organize a backlash while tending to signal to low-information voters that Democrats were doing something controversial even among their own partisans. The backlash against Medicare privatization is overwhelmingly likely to grow over time, but it’s also the case that between today and November 2012 other events will intervene and crowd the agenda space possibly letting members off the hook for an unpopular vote.
Matt Yglesias on the key differences between how the GOP and Democratic Caucuses operate.