Net Migration of College Graduates

Interesting map:

Actually, this would be even more interesting if broken down to the county level like those Red vs. Blue maps we see every election.  I would bet a large number of the red counties in Texas on those maps would be red here, too.  And New York state would also be interesting.  Honestly, population density explains hell of a lot, politically, and I would guess is also self-reinforcing in this map.