Reply #9: you put your finger on one key element.

[ginnyinWI]

Obama is not far-left so doesn't give the GOP very much to push against. Think of the attacks they've dreamed up since he became President. They have all amounted to nothing because they were based on nothing: they were lies or distortions or scare tactics about what Obama "might" do. Doesn't sell very well! He gets a lot of them wishing he were on their team--which of course he really is--he's on America's team.

In other words, the politics of polarization doesn't work very well when only one side is trying to do it. :)