Romney's done, Senate's held, House?

The campaign will downplay their chances, and they have to keep the pressure up all the way through, but the Presidential election has been over since July, and the Senate was locked down over the Democratic convention. So the strategic question for the Obama campaign is how can they use Romney to help us take back the House?

Romney's 47% video, and his doubling down on that view of the electorate, gives Obama the opportunity to frame him and the Republican party as a Goldwater extremists, when the Democrats won the largest share of seats since the New Deal. Talk of improving House chances has erupted across the Democratic Internet, sparked by Sam Wang's house outlook giving Democrats a 74% chance of taking over (Dylan Matthews at the Post dug into Wang's data a bit more):

In summer polls leading up to the 2012 conventions, Republicans were behindDemocrats by a median of 2%, a 9-point swing from 2010. Consequently, many seats won in that Republican wave are now at risk

Karl Rove's American Crossroads appears to be pulling back from Romney to focus down-ballot. Josh Marshall of TPM posted a note from a correspondent suggesting TPM shift focus to the House. Nate Silver pointed out in August that the GOP majority was at risk, and since then polls have moved to suggest the Democratic wave he saw as a possibility. The Obama campaign has seen a party ID shift in their polling (they lower the Democratic numbers internally in case the shift is a mirage), which is another indication of a wave. The Huffington Post House outlook has more Republican than Democratic races to watch,  and as more congressional polling becomes available we should be able to test Wang's predictions from the national polls.