It was about Obamacare. Big time.

“A number of liberal pundits working off of White House talking points became heavily invested in the argument that the election was not about Obamacare. They seemed to believe if the election was about something else, Obamacare wouldn’t be repudiated or the GOP would lack a mandate to get rid of it. This was, to put it mildly, silly and desperate.
No matter how many GOP ads were cut, how much direct mail was distributed, or campaign Web sites were created pledging to eliminate Obamacare or attacking Democrats for supporting it, the election could not be a referendum on Obamacare, according to the left-wing blogosphere. But it was. Of all the president’s policies that were on the ballot, Obamacare was the most significant.”