http://www.esri.com/industries/elections/graphics/results2004_lg.jpg
We have to ask ourselves who is terrifying the urban populace into voting like this. I would argue that it is a bipartisan, media-implicated, political influence situation. People are afraid, hence their abject rush toward dependency on the government. It's not just the Democrats who have structured our economy around the politics of fear. When immigrants can take or underbid your job any day of the week, why wouldn't you be afraid? There are people in both parties who are paid well to keep it that way.
Rural people are, by virtue of their lifestyle, more independent both politically and economically than urban voters. Urban voters, viscerally knowing (however unconscious) how dependent they are upon deliveries of food, water, fuel, transportation services, etc., have become accustomed to government to provide those services. It is no surprise then, no matter how well-off they might be, that urban voters so easily fall for the siren song of "government protection."