Romney received 10.2% more of the vote than McCain did in Utah. In Missouri, it was 9.6%. I believe, the next closest state was Indiana (I think) with a 5.3% shift. This is particularly strange in an election where Missourians elected a Democratic senator, governor, secretary of state, treasurer, and attorney general. In fact, the only state-wide office to go to a Republican was the lieutenant governor.
So, what gives? Why do Missourians hate Obama?