It's not the Bible Belt though because while conservative and religious, there are few Southern Baptists.
FYI, The Bible Belt doesn't refer to just Southern Baptists. You could make an argument that all the 2004 Bush states are part of the Bible belt, given that moral values were the main issue.
Traditionally, the Bible belt states are the confederate states adding Kentucky and Oklahoma (little Dixie that is), subtracting parts of Florida (Orlando and south of it)
No, it can't. The term "Bible Belt" specifically refers to Southern Baptists though Mormons are more conservative and various other states are also theocratic.