John McCain
Believes the institution of marriage is a union between one man and one woman. Voted for the Defense of Marriage Act but voted against the Federal Marriage Amendment. Says states and local governments should set their own marriage policies

Voted against the Employment Non-Discrimination Act of 1996. During an interview in 2000, McCain said: "I think that the present laws that clearly prevent a discrimination of any kind certainly [apply] to gays and homosexuals as well. That's why I voted the way that I did. I think that enforcement of existing law could work rather than passing special laws for special categories of people."

When asked about the military's "Don't ask, don't tell" policy, McCain said: "...I don't think there's any doubt that there are evolving attitudes in America about many issues, including this one, but every military leader that I talk to, I say 'Should we change it?' They say, 'It's working.' And right now we've got the best military we've ever had -- the most professional, best trained, equipped and the bravest. And so I think it's logical to leave this issue alone. I really do."

The McCain campaign states that gay adoption is a state issue and does not endorse any federal legislation.  Watch McCain speak about same-sex marriage

Barack Obama
Opposes same-sex marriage, but also opposes a constitutional ban. Says he would repeal the Defense of Marriage Act and voted against the Federal Marriage Amendment. As stated on the Obama campaign Web site, he supports full civil unions that "give same-sex couples equal legal rights and privileges as married couples, including the right to assist their loved ones in times of emergency as well as equal health insurance, employment benefits, and property and adoption rights."

Says the Employment Non-Discrimination Act should be expanded to include sexual orientation and gender identity. Advocated legislation that sought to expand federal hate crimes law to include sexual orientation and gender identity.

Says the military's "Don't ask, don't tell" policy needs to be repealed.
 Watch Obama speak about same-sex marriage