Democrats also won the nationwide popular vote for the House of Representatives. Voters wanted the Democrats this election, and instead they get another Republican majority in the House.
^^^^^^^
They need to make this a key talking point. Even stupid people can understand why this is Inksed up. It would also further erode Boehner's legitimacy at a time when he is already facing an avalanche of trouble on all sides.
Are one-party general elections and unopposed races taken into account for this?
Not only are they not, if you take them into account you likely get a Republican victory: http://www.dailykos.com/story/2012/11/08/1159272/-Dissecting-the-House-Popular-Vote
Democratic-held seats that were either uncontested or otherwise did not feature a Republican on the ballot: 19
Republican-held seats that were either uncontested or otherwise did not feature a Democrat on the ballot: 25
That's more 'discounted' votes for the Democrats than the Republicans.