http://krugman.blogs.nytimes.com/2012/11/20/the-new-republicans/:
[O]n economic issues the modern Democratic party is what we would once have considered “centrist”, or even center-right. Obama’s Heritage-Foundation-inspired health care plan is to the right of Richard Nixon’s. Nobody with political influence is suggesting a return to pre-Reagan tax rates on the wealthy. Fantasies about Obama as a socialist, redistributionist hater of capitalism bear no more resemblance to reality than fantasies about his birthplace or religion.
Second, today’s Republican party is an alliance between the plutocrats and the preachers, plus some opportunists along for the ride — full stop….
Someday there may emerge another party with the same name standing for a quite different agenda…. But that will take a long time… Finally, it’s true that there are some Republican intellectuals and pundits who seem to be truly open-minded…. But… “seem to be”… they’re professional seemers. When it matters, they can always be counted on — after making a big show of stroking their chins and agonizing — to follow the party line, and reject anything that doesn’t go along with the preacher-plutocrat agenda…. Anyone who imagines that there is any real soul-searching going on is deluding himself or herself.