Michael Barone notes immigrant voting trends between Bush/McCain and Gore/Kerry/Obama

here:

Not all of these different shifts in opinion will alter electoral votes. McCain is not going to carry Massachusetts; Obama is not going to carry Wyoming. But they do explain why Obama is targeting North Dakota and Nebraska (where he might win the electoral votes of the Omaha and Lincoln congressional districts); why Virginia, Republican since 1968, is competitive; why McCain is running better in economically ailing Michigan than in economically thriving Minnesota. We like to think our political choices are rational responses to issues of today. But the numbers suggest otherwise. Indeed, they just might be linked to the distant past, to what Abraham Lincoln called "the mystic chords of memory".