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?
Doing so probably wouldn't matter much to the final numbers. Most unopposed democrats tend to be in overwhelmingly dem and heavily minority districts. Find some local republican to get on the ballot won't result in their getting more than 5-10% of the vote in places like detroit or east harlem. The number of unopposed republicans are fewer, but a random democrat on the ballot even in such heavily gop districts could be generally expected to carry 20-30% of the vote. In all, the unopposed races are likely a wash, and certainly not enough to overcome a a popular vote deficit of over half a million votes.