I’m from Missouri, but of the two states, Oklahoma seemed closer to reality. Maybe it’s because my crazy relatives live in Missouri ;-).
My family migrated from Virginia into Illinois and down into Missouri, after the Civil War, Great Grandfather fought for those dang yankees. He was a U.S. Marshal for a while in Missouri, then most of the family migrated into Ottawa County Oklahoma. Good people all over that area, but judging by Sebelius and McKaskel there must have been in influx from the coast.