University of Virginia political science professor Gerard Alexander wrote a commentary to that effect in Sunday's Washington Post.
It's pretty interesting and contains a fair amount of support for his theory. Of course, you can hear the liberals now, saying the conservatives are the ones who are condescending. Maybe they're both right.
But, for now at least, all there is to offer on the subject is Alexander's commentary.
So take a look. You can read, can't you?
Whoops, now I'm being condescending. Sorry.