Probably best to not over-analyze this. I mean for me William F Buckley and the Kennedy clan were way more WASP in there upbringing than any Southrons. Boarding schools, Harvard-Yale, the country club, Newport, the Vineyard, white shoe firms. The exclusivity of these WASP bastions are gone, so the term really doesnt mean anything anymore- like BRTD's favorite Catholic vote or Reagan Republican.
I assume you mean "Reagan Democrat" (though yes, "Reagan Republican" is a pointless and stupid term today, it'd be like someone calling themselves an "FDR Democrat"), but yes, WASP is a meaningless distinction today. As far as I'm concerned if you're white, you're white, the end. Yes obviously the region of the country and if that person lives in or is from an urban/suburban/rural background matters a lot, but those are only tangentially related to ethnicity.
