Earlier quoted context omitted.
It's remarkable to me how folks who would never, ever be seen to say anything rude about other races (or who would only do so very obliquely) will quite loudly smirk about how much they hate Southerners, how stupid they think Southerners are &c. It's all just class. One can be just as intelligent with a Southern accent as one can be stupid with another.
On the other hand, look at how (politically) "those people" behave in aggregate. It might only be a majority of 51%, but clearly there is a sizable portion of people in the (traditionally somewhat sparsely populated) south / center of the country that have quite different values than the the people living along the crowded coasts. Not saying one group is smarter/dumber, just that the difference in values makes it har…
Saying the entire south in aggregate is "stupider" because of that is plain wrong.