Obama comes from Chicago politics.If he and his team play a bit"aggressive" next time around they should pick up seats.
I think alot of people will ask"We gave the Republicans a significant amount of power last time around in 2010.....what did they do with it?".If they can't give significant answers.....I think they will lose some seats.
The union busting in Wisconsin will definitely hurt them.That faction is "Obama's Tea Party" and i suspect they will be much more active then the last election