What I think he's saying is that the American voters are rejecting liberal policies, as evidenced by the number of districts that voted out Democrat congressmen in favor of Republicans. And yet, after this clear evidence of rejection, liberals are still saying it's the conservatives that are the problem, thus giving the proverbial middle finger to the American public and addressing none of the issues that lost them the Senate.
Both parties are the problem. If nothing else, the main stage is distracting people from the stage where most policies actually happen; Statehouses. Parties cycle in the House and Senate on pretty regular intervals, and a handful of districts changing hands is hardly the majority of voters. In all the contested Senate elections combined, only a few million people had any real voice. There are more people in prison than who's votes mattered in this midterm. Neither party has any incentive to do any real work, nobody cares to compromise, and I'd wager that most have more to gain from political theater than actual politics.
So, saying that America rejected liberal or conservative policies based on this election or any other is comical, especially when you consider the actuality of the 2 parties' policies without blindly labeling Republican policies conservative and Democrat policies liberal.