McCain’s recent interview in the New York Times gets into LGBT rights, adoption for same sex couples, and his perhaps unlikely Republican approach of not supporting a constitutional amendment to ban same-sex marriage. He instead supports the rights of each respective state to decide its legality there:

Mr. McCain, who with his wife, Cindy, has an adopted daughter, said flatly that he opposed allowing gay couples to adopt. “I think that we’ve proven that both parents are important in the success of a family so, no, I don’t believe in gay adoption,” he said.

. . . 

Many social conservatives strenuously oppose California’s decision to allow same-sex marriage. But Mr. McCain, who also opposes same-sex marriage, has always said that the issue is up to the states, and in the interview he said he would stick to that position as president even if California chose to continue allowing gay marriage after putting the matter to a statewide vote in November. “I respect the right of the states to make those decisions,” he said.

McCain’s Conservative Model? Roosevelt (Theodore, That Is) - NYTimes.com