Matthew Dowd of ABC News does some of what he calls "back of the envelope" calculations to come up with white, middle class women who like Obama, dislike his policies, think the country is on the wrong track, and oh, by the way, dislike Romney. Dowd says they are the key to the 2012 election.
Dowd leaves out something other studies have shown: a large proportion of these women are unmarried. I suspect, given his description of the group, many won't get around to voting.
These women lack passion for either side. They won't send off for an absentee ballot and on election Tuesday most will be too busy or too tired to stand in line at a polling place. Ergo, they won't be the big factor Dowd thinks they'll be.