Despite gains made by the Republican Party, support for activist government remains very strong. Evidence from Gallup shows that Americans tend to be ideological conservatives but operational liberals.
The mystical center is where Obama's disaffected base resides. He doesn't have to choose. Both swing voters and the Democratic base want the President to stand up to Wall Street on behalf of main street.
Even if New START is ratified before the Democrats' Senate majority significantly shrinks, it will not help advance nonproliferation advocates' long-term goals unless a lost consensus on arms control fundamentals is rebuilt first.
Bloomberg is a lot more viable than people in the Northeast would like to think. If he is running because he thinks he can pull the Republicans back or make a viable third party movement, he poses a major threat to the Democrats.
An election like this one always calls for both moral centering and political recalibration. Leaders of both parties were talking the morning after the election about cooperation to solve the nation's problems. That will likely also take a movement.