http://www.realclearpolitics.com/art...hn_114579.html
President Obama does not currently have enough white support to win re-election even if he retains his minority base from 2008.
Today, fewer whites back Obama than any Democratic candidate since Walter Mondale. Romney does not need to emulate Ronald Reagan to win. Should he match Reagan’s share of the white vote in 1984 -- presuming all else remains constant since 2008 -- Romney would rout Obama.
The white margin to watch: 61-39. That’s the rough break-even point. Obama likely needs more than 39 percent of whites to assure re-election. Romney likely needs at least 61 percent of whites to assure Obama’s defeat (or 60.5 in some scenerios). These are estimates based on an electorate that matches the diversity of 2008 or is slightly less white. It presumes the Electoral College outcome does not diverge from the winner of the popular vote (loose talk aside, it’s only happened four times in U.S. history).