Preliminary results from the 10 Regions of American Politics are below, with more detailed data to come. Barack Obama has won six regions, taking South Coast away from the Republican column. That means he's won the five most urbanized regions (see earlier post), four of them by margins near or above 20 points, plus he hung on to the Democratic Party's last remaining region with a substantial number of "small town" voters (Chippewa).
The shift of Mega-Chicago and El Norte, which are now almost as Democratic as the Northeast Corridor and Upper Coasts, is significant. Mega-Chicago voted for Gerald Ford in 1976 and George H.W. Bush in 1988, and El Norte was one of Ronald Reagan's strongest regions in the 1980s. The GOP can't afford wipeouts in all four regions if it is to be competitive in 2012.
Northeast Corridor: 65% Obama, D margin of 30 points, up from 21 points in 2004.
Upper Coasts: 65% Obama, D margin of 30 points, up from 22 points.
Mega-Chicago: 61% Obama, D margin of 22 points, up from 9 points.
El Norte: 59% Obama, D margin of 18 points, up from 3 points.
Chippewa: 55% Obama, D margin of 10 points, up from 3 points.
South Coast: 52% Obama, D margin of 4 points, reversal from a loss by 6 points.
Frontier: 53% McCain, R margin of 6 points, down from 18 points.
Cumberland: 55% McCain, R margin of 10 points, down from 20 points.
Southern Inland: 56% McCain, R margin of 12 points, down from 16 points.
Comanche: 60% McCain, R margin of 20 points, down from 27 points.