Oklahoma in 2008

[Indy Texas]

Oklahoma is the meetingpoint of a lot of regions that are conservative/Republican for different reasons. It's on the western end of the Bible Belt, giving its citizens socially conservative views. It's where the Ozarks terminate, making it part of that Appalachian/Ozarkian region of largely rural whites who are very suspicious of and hostile to central government. It's one of the Great Plains states, making agriculture and ranching a significant presence (we're talking cattle ranching and wheat, as opposed to dairy farmers who tend to be less conservative for some reason). It also sits on a lot of oil and natural gas reserves.

Evangelical Christianity + Skepticism of Federal Government + Wheat and Cattle + Oil and Gas = What reason do they have to vote for Barack Obama?

I also wouldn't lump OK in with its northern neighbors, Kansas and Nebraska. Their economies are different - KS and NE have more farming, no oil and more financial services. Their cultures are different - KS and NE were settled by Methodists from New England and the Midwest, as opposed to a melange of Baptists and evangelicals from the Upper South and the remnants of whatever Native Americans were left over.