The Alliance Party supports same sex marriage in Northern Ireland, while the Presbyterian church strongly opposes the move.
BBC: Ford compares gay marriage debate to civil rights campaign
But when it comes to same-sex marriage, the Republican Party will still face opposition from many members.
She has since won a sex discrimination claim against the party and, until recently, sat as an independent in Brussels.
Plans to legalise same-sex marriage have divided the Conservative Party and more than 100 Tory MPs are thought to be against the idea.
Recent polling by Lord Ashcroft suggests a fairly even balance between those who would be encouraged to vote Tory if the party introduced same-sex marriage and those who would be discouraged from doing so.
Mr Ford said his personal position on same sex marriage was the same as the party's position.
BBC: Ford compares gay marriage debate to civil rights campaign
Today, apparently the committee charged with drafting the Democratic Party platform for the convention unanimously approved including support for same-sex marriage, and I wonder if you have any reaction to that.
WHITEHOUSE: Press Briefing by Deputy Press Secretary Josh Earnest
True, the question of same-sex marriage is starting to loom larger as an issue - the Labor Party national conference will debate it in December, and the emboldened Australian Greens are pressing for reform.
Obama's Republican challenger, Mitt Romney, ran as a defender of traditional marriage, and the party's platform opposed same-sex marriages.
This time around the Democratic Party has an embarrassment of its own: the attorney-general was forced to resign after a sex scandal.
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It is also at odds with the Republican Party's platform, which opposes same-sex marriage and defines marriage as a union between a man and a woman.
He, like all liberals of his time, could not have conceived of same-sex marriage, and he, like the entirety of the Democratic Party just a decade or two ago, unwaveringly supported traditional marriage.
Ms Davidson, who is gay, has been among those giving cross-party support to a same-sex marriage bill which is being brought forward by the Scottish government, while Cardinal O'Brien has been a strong critic of the plans.
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