Over at Discover blogs I have two posts up, Republicans, the middle class party and Republicans still the party of the rich. Also, if you want to talk about limousine liberals, note that there is only one precinct in Manhattan where Republicans outnumber Democrats, the downtrodden southwest corner of the Upper East Side.
Poking through the GSS I will tell you what I’ve stated before: wealth/income and education have opposite independent effects when it comes to politics. All things controlled those with more money are more conservative and/or Republican. All things controlled those with more education are more liberal and/or Democrat. As a rule economic class status is much more salient as a predictor of politics for those without college degrees than those with college degrees. In plain English there’s a really strong tendency of those without college degrees who are in the upper income brackets to being conservative, and those in the lower income brackets to being liberal (at least in their voting patterns and alliances). The distribution is more uniform for those with college degrees.