The Economist:

Republican pessimism is more than a PR headache. Put simply, it is hard for a party to win national elections in a country that it seems to dislike. Mr Romney’s campaign slogan was “Believe in America”. But too many on his side believe in a version of America from which displeasing facts or arguments are ruthlessly excluded… Ensconced in a parallel world of conservative news sources and conservative arguments, all manner of comforting alternative visions of reality surfaced during the 2012 election. Many, like Mr Akin’s outburst, involved avoiding having to think about unwelcome things (often basic science or economics). It became a nostrum among rank-and-file Republicans that mainstream opinion polls are biased and should be ignored, for instance, and that voter fraud is rampant and explains much of the Democrats’ inner-city support. Both conspiracies sounded a lot like ways of wishing the other side away. State of Denial