I thought this was one of our victories in 2010, and it got turned into a loss?
Stuart Rothenberg wrote http://www.rollcall.com/issues/57_81/rough_estimate_current_house_election_field-211590-1.html
You have to read up on each state separately but a Dem gain of 1 or 2 here and 1 or 2 there adds up. Not many apparent GOP gain so far.
In many states Shoring up GOP incumbents seems preferable to putting Dems at risk by dropping the GOP % in a district. )