I don't think the comic strip B.C. counts because it sounds like it was always a Wingnut comic strip.
The biggest reasons I see for guys turning Wingnut is becoming a born-again Christian, like Kirk Cameron. The only famous born-again Christians that come to mind who aren't Wingnuts are Alice Cooper and Jimmy Carter.
What about George Wallace? He became a much better person after being born-again.
You have a point, as I said to the Iron guy, "Not everything is black & white", some actually become kinder and better people as "Born Agains".
My beef is not against Conservatives & Born-Agains.....my beef is with the Wingnuts among them. There's nothing inherently wrong with Conservatism per se, it's Wingnuttery that's the problem.
A Conservative can be Progressive, too.
Both Left & Right have their Progressive & Regressive versions. The political/Moral/Ethical/Ideological spectrum is pretty complex.