Anyone who has seen those election maps broken down by counties can see how geographically concentrated Democratic voters are, much to their party’s electoral disadvantage–once you move past narrow bands on the east and west coasts, there is a vast sea of red in between. Except for two kinds of blue pinpricks–the densely populated inner cities of Chicago, Detroit, Milwaukee, etc ., and the counties in which large universities are located.

Anyone who has seen those election maps broken down by counties can see how geographically concentrated Democratic voters are, much to their party’s electoral disadvantage–once you move past narrow bands on the east and west coasts, there is a vast sea of red in between. Except for two kinds of blue pinpricks–the densely populated inner cities of Chicago, Detroit, Milwaukee, etc ., and the counties in which large universities are located.