... In other words, Democrats would have to perform quite a bit better in House races in 2014 than they did in 2012 to win control of the chamber – when usually the president’s party does quite a bit worse instead.
One should never say never when it comes to forecasting the outcome of an election two years in advance. But it might take a major scandal in the Republican party, or for Republicans to splinter into factions, for Democrats to have more than a remote chance of winning the House. ...Nate Silver, 538
Okay -- that's the conventional wisdom. But we could change that with well-organized and effective ridicule.