At my other weblog I have a post which presents dozens of charts gleaned from the GSS. The intent was to compare Catholics and Protestants of New England origin to whites from the McCain Belt, and adduce whether the various Catholic immigrant groups such as the Irish and Italians in New England absorbed the values of the Yankee natives.
The most shocking result seems to be the attitudes to interracial marriage.
Over 50% of the McCain Belt whites favor banning it!
Come to think of it, for many parts of the US just a few decades ago interracial marriage was banned. Perhaps these survey respondents are simply supporters of 'traditional marriage'.