the polls that have looked at voter's preferences based on education have been interesting to look at. last spring the surprising stats were that those with a college and post graduate degree were overwhelmingly choosing obama, and those with no college were supporting clinton.
now ion the matchup between obama and mccain it is pretty much difficult to break out any pattern except that obama is ahead in all categories, but his lead is greater the more educated the voter is.
http://www.gallup.com/poll/108043/Ca...Education.aspx
I'm not sure there is a clear difference of voters party affiliation based on education as much as there is one based on income. from what I recall seeing in the past the greater one's income the more likely that voter is a republican.