"And Salon's Steve Kornacki points out that while attacks on Romney's lack of specificity are nothing new, those attacks have typically come from Democrats. Now that they are coming from his own party, it's bad news. Romney is coming under fire from fellow Republicans for not being sufficiently specific, and these attacks do reinforce preexisting story lines about Romney's lack of core beliefs. But I don't believe for a second that Romney's Republican critics actually care about whether and to what extent he offers specific policy proposals. Instead, they care about establishing a narrative to explain his defeat—a narrative that places the blame for that defeat squarely on his shoulders.
For professional conservatives, the only thing more important than winning the 2012 presidential election is not getting blamed for losing it. And as much as they might be disappointed by a Romney defeat this November, the thing that would actually crush their souls would be if Romney were to lose and their ideas were assigned the blame. Better to throw him under the bus now, even if it means he's less likely to win, than to suffer that fate."