The money quote:
In the long run, however, Democrats won’t be the only losers. What Republicans have just gotten away with calls our whole system of government into question. After all, how can American democracy work if whichever party is most prepared to be ruthless, to threaten the nation’s economic security, gets to dictate policy? And the answer is, maybe it can’t.
Well, at least Mr. Krugman has a glimmering of understanding of what's really going on, as limited as even his perspective necessarily is. What he needs to understand is that the fixed political realities in play made the outcome virtually scripted if not fully scripted.