I don't think there is a single state where Baptists comprise a majority of the population, they may be the largest denomination, but they don't constitute an outright majority.
Southern and Baptist are not co-equal terms. The Methodists are the other predominant Southern Protestant faith, and it is from the Methodists that you find more adherents of the "redneck" culture, not to mention, much of the political leadership.
"Harry Truman was both a Southern Baptist AND a poker player"
He was also a Freemason, and he was from Kansas City, a city where I'm guessing, you didn't have a real thriving "Baptist" culture (in the sense that Southerners use the word "Baptist") He was also a member of the Pendergast machine, which specifically fought the Klan, which at the time, had a very high Evangelical membership.
Um, no. Truman was from Independence, MO.. But wait!!! You say Truman was a (GASP!) Freemason??? Tell me it's NOT true! That would have put him in league with the Devil...along with those other Freemasons such as George Washington, Franklin, and MOST of the Founding Fathers. Dig up the base of the Capitol! It is known that Washington placed a Freemason symbol there!!!!