How rapidly the political landscape changes. A month ago Democrats were sure the unwise (actually, stupid) Republican government shutdown had set them up for an easy election cycle next time. Now Democrats are in full panic mode as the ObamaCare mess continues to deepen, and the president's approval ratings have falling to a new low. As they say, a week is a lifetime in politics.
Underneath all of this, the nation is still split almost exactly 50-50 between conservative and liberals, so election results will probably be determined more by local gerrymeandering and local issues than by any of this Congressional posturing. No doubt there are more ObamaCare problems to come, since the government seems incapable of even fielding a relatively simple website one can assume the deeper and more complex issues (like linking all the various agency databases together correctly, and managing the high volumes many were never designed for) will produce yet more discomforting news for Democrats.
On the other hand, Republicans show no sign yet of having learned anything useful from all their various missteps in recent years, so perhaps they will again manage to snatch defeat from the jaws of victory.
In the famous words of journalist Ralph Carpenter "It ain't over till the fat lady sings..."