Question: Have W and any other past candidates ever been asked this question and how did they answer? I just wondered.
Somebody tried to put Bush on the spot for this in the past presidential debates. He was matter-of-fact about it being a free country where people could love whom they want; but that marriage is a special institution that he beleives is between a man and a woman. So he sidestepped the framing of the question in terms of labeling morality, but that's probably the most pragmatic and centrist thing he could have done.
I don't agree at all with homosexual marriage, but I do think the matter cannot be decided definitively any more than the abortion question could by one group or another getting a Federal law passed. It is a matter of the populace no longer demanding or caring to have representation on key issues. If the matter were put to a vote, it would fail. But people have to vote for federalists and Constitutional originalists in order to preserve the system and have the matter put to a vote, or to demand impeachment of judges who are out of line in imposing their secular morality, and so far, it's taking awhile for the importance of this issue to sink in.
Look it up.
In case you claim ignorance, I think the whole "gay marriage" ban in the 2004 election should guide you on their opinion.
And welcome to Free Republic.