Charlie Cook in the National Journal:

Although 2010 is a "down-shifting" election, from a high-turnout presidential year to a lower-turnout midterm year, one group was more interested in November than it was in 2008: those who had voted for Republican John McCain for president. And the groups that showed the largest decline in interest? Those who voted for Barack Obama -- liberals, African-Americans, self-described Democrats, moderates, those living in either the Northeast or West, and younger voters 18 to 34 years of age. These are the "Holy Mackerel" numbers.

Among all voters, there has been a significant swing since 2008 when Democrats took their new majority won in 2006 to an even higher level. But when you home in on those people in this survey who are most likely to vote, the numbers are devastating. The NBC/WSJ survey, when combined with a previously released NPR study of likely voters in 70 competitive House districts by Democratic pollster Stan Greenberg and Republican Glen Bolger, point to an outcome for Democrats that is as serious as a heart attack. Make no mistake about it: There is a wave out there, and for Democrats, the House is, at best, teetering on the edge.

Obama just rebuilt the Republican brand by throwing his own base under the bus. And they know it, and they're not happy.

Alternatively, of course, they could be racists.

NOTE Via Bostonboomer at The Confluence.