Is it a left-brain thing?

The Macho Response:

“The further left you go, the more insular you get. Americans on the left tend to talk only to one another; study only under left-wing teachers; and read only fellow leftists. That is why it is a shock to so many liberals when a Republican wins a national election -- where do all these Republican voters come from?”

-- Dennis Prager, saying what few liberals will ever hear (for obvious reasons) though it's Real Clear Politics."