Former Maine Sen. Olympia Snowe says her views have shifted on same-sex marriage, and that she no longer supports the Defense of Marriage Act. Take a look at some other Republicans who support same-sex marriage.
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Ohio Sen. Rob Portman made headlines on March 15, 2013 by coming out in support of same-sex marriage, a position he reached after his son told Portman and his wife that he was gay. He was the first sitting Republican senator to announce his support for gay marriage.