Arnold's election is a good ilustration of that
Instead of pissing on him with the lame duck boobytraps, the dnc would be well advised to give real cooperation to the transition.
They are risking having the most devestating thing possible happen, from the perspective of the dnc: A moderate Republican party.
A moderate party that could hold the fundies in coalition would replace the dnc for a generation. The irony is that it is the Republicans who could hold this center-right coalition together better than the dnc could, at this time.