Barack Obama and John McCain - Neither considers gay people to be human

Barack Obama: Although Barack Obama has said that he supports civil unions, he is against gay marriage. In an interview with the Chicago Daily Tribune, Obama said, "I'm a Christian. And so, although I try not to have my religious beliefs dominate or determine my political views on this issue, I do believe that tradition, and my religious beliefs say that marriage is something sanctified between a man and a woman."

Barack Obama did vote against a Federal Marriage Amendment and opposed the Defense of Marriage Act in 1996.

He said he would support civil unions between gay and lesbian couples, as well as letting individual states determine if marriage between gay and lesbian couples should be legalized.

"Giving them [them?] a set of basic rights would allow them to experience their relationship and live their lives in a way that doesn't cause discrimination," Obama said. "I think it is the right balance to strike in this society."
Sources: Chicago Daily Tribune, National Gay and Lesbian Task Force

John McCain: McCain says marriage should be between a man and a woman and should be regulated by the states. He opposed a federal constitutional amendment to ban gay marriage because "it usurps from the states a fundamental authority they have always possessed." McCain endorsed a 2006 Arizona ballot initiative to limit marriage to be between a man and a woman and said, "I'm proud to have led an effort in my home state to change our state constitution and to protect the sanctity of marriage as between a man and woman." He also supported the 1996 Defense of Marriage Act, which banned federal recognition of gay marriage and domestic partnerships. He supports the military's "don't ask, don't tell" policy and says that to "even reopen the issue" would be a "terrific mistake."

Both: Believe marriage is between a man and woman.
Opposed a constitutional gay marriage ban.

At best: you can have the rights that "they" [in this case, politicians] give you, but don't ask for more, as you deserve no more, because you aren't one of them. You're different.