Rmoney is a poopie head. So there.
Besides, Bush acquired a "Texan accent" for political purposes. It helps him hide his drunken state with slurred words and missing word endings (which are legitimately part of the "Texan accent" for non-drunk Texans). Note: Poppy Bush had no such accent. As Burt Reynolds said in the "special features" section of the "Smokey and the Bandit" DVD (paraphrased), you can give a CB to someone from Maine and all of a sudden they've got a southern accent.
As for the south, the GOP needs the "Bible Belt" votes to even be in the game. I don't believe for a second that any of them really bother with the Bible or anything in it - they just know how to push the buttons. I'm in PA now and you had better not mess with gun rights here. This is a hunting state and guns are sacred (and I own guns for the record). I lived in NH for ten years. Gun fire (nearby) was so common that I stopped noticing it. I never heard a gunshot when I lived in MD.
I've been to TX, CA, KY, IL, IN, WI, MI, OH, PA, CT, RI, NY, NH, VT, VA, WV, NC, SC, FL, Montreal and Toronto. They've all got their "stereotypes" and most of them are actually true. That's not a bad thing, just regional differences. Hell, PA alone has more regional differences than I can count. You can tell if someone's from the Pittsburgh or Erie area based on whether they say "Yuns" or "Yins" (both translate to "Y'all"
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There's a difference between pointing out the "stereotypes" as a regional thing and "mocking" them. I live in south-central PA and still refer to it as "Pennsyltucky" because, well, it is. That isn't mocking it, just observation.