Religious adherents in America

I got this map's link [http://time.blogs.com/photos/uncategorized/adherents.gif] from andrewsullivan.com. It's fascinating. It shows a county by county distribution of religious adherents (ie members of a church) across America. The biggest surprise to me personally is how much of Florida is under 50%. Much less of a surprise is Minnesota. Living proof that religious people can build a civilized, sane version of the American dream. But also look at Minnesota for this: there is a swath of religious affiliation pointing directly north to Winnipeg.

[I just threw that last part in for any Canadians who might be reading this]