Earlier quoted context omitted.
I believe that you are missing the point: most Republicans do not believe in evolution because, as they say rather cluelessly "it is just a theory". Well, it turns out that gravity also is "just a theory".
All the people who vote Republican in my social network believe in evolution. I allow that I have seen news reports of people who tend Republican in other areas of the country who do not. Have you ever met a Republican creationist? I would be interested to see polls on evolution belief of poor inner-city residents or unionized blue collar laborers who support Democrats. I expect the results would not be flattering.
Here's something: http://www.forbes.com/sites/jonentine/2012/05/03/republicans...
You're correct, it's not flattering.