One of my more instructive (and favorite, personally) posts shows hypothetical electoral maps from the 2008 presidential election when varying selected demographic restrictions are introduced. I'll do the same this November and as a refresher for doing so, here is a look at how things would've shaken out if only those from households earning at least six figures had been eligible to vote:
In this scenario, McCain wins 298-240. In reality, of course, Obama crushed McCain, 365-173.
Half Sigma has on several occasions spoken of how the wealthy are increasingly turning away from the GOP and towards the Democratic party, repelled by the former's increasing Palinism. That sounds a bit dated nearly four years later, with the ascension of the tea party movement, the transformation of the Obama image from a SWPL into a racialist redistributor, the relegation of the former Alaska governor to bit segments on Fox News, and the elevation of a sharp, sober, successful, socially moderate guy to the top of the Republican ticket, but I'd argue that he oversold it at the time as well, as the map above illustrates.