That's a great question. Same-sex marriage seems to do great in every survey, but it loses big when people have to go vote on it. Why is that? Well, some pundits are crunching numbers trying to explain it. Go read if you must, but I think it's a lot easier to explain.
Let's say you call PawPaw on the phone and ask me if Same-Sex marriage is a good idea. I don't much care what people do in the privacy of their bedrooms. Not any of my business. Just don't give a damn. Likewise, what I do in my bedroom is nobody's business, either. So, I get polled as supporting same-sex marriage.
When I get to the voting booth and see an amendment defining marriage as between one man and one woman, I'll pull the lever for the YES vote. They're different questions. Do I care if two men get married? Not particularly, in the abstract. Do I believe that marriage should be properly defined as between one man and one woman? Yes I do.
Aggravating, isn't it? That's the nature of the American voter. You've got to be careful how you frame the question, or I'm liable to answer both sides of it. In the abstract, I don't care what you do in California, except that when they put the question to California voters, they turned down same-sex marriage as well.
Y'all are asking two different questions, linking them in your minds. In my mind, they aren't linked at all. My opinions reflect that position. Call me a hypocrite, call me narrow-minded, but don't call me late for supper.