I started life with 19 living aunts and great-aunts, a number of Wodehousian scale. Two of them (sisters to each other) recently got into a discussion about same-sex marriage. The Aunt of the Right, who viewed St. Ronald Reagan as a moderate, took one side. The Aunt of the Left, a quasi-socialist freethinker, took the other side. You can imagine the discussion between the aunt who held that same-sex marriage was flat-out wrong and the aunt who said that it was the private business of the two men or women involved. I could imagine it too, when Venerable Mom reported it to me.
Except that I got it wrong, and you probably did too. The Aunt of the Right said that same-sex marriage should be allowed, as long as her taxes didn't go up. The Aunt of the Left said that same-sex marriage was horrendous to even think about.
I'm planning to see the Aunts of the Right and Left, together, in a month, when I'll raise the topic to them and find out why they each believe the opposite of what I would have predicted. I can't use the beliefs of two sisters to make any firm conclusions about what America thinks on this issue, but their views suggest to me that it can't be expressed so neatly as a churched versus unchurched question.