James Carville and Stan Greenberg: "We do not yet know the outcome of the 2012 election and we're certainly not calling it now -- the Congressional ballot remains tight and there are still more than two months of tough campaigning to go. But at this moment, our latest battleground survey in the 54 most vulnerable Republican-held districts -- many of the same Republicans who 'shellacked' us in 2010 -- shows that GOP incumbents are paying a heavy price for misreading the 2010 election results and overreaching on a conservative Paul Ryan agenda that voters did not mandate."