This isn’t a mobilizing issue and it is really a waste of McCain’s time. The only thing I can think of is he thinks there is a good chance of picking up some moderate liberals and green independents which are exactly the people who he isn’t going to get. He should stick to what works for him, fiscal responsibility, a strong military, and a strong economy. He might as well go pick up Huckabee as his VP for all that this is worth to him.