Some social conservatives bristle when I say the gay marriage issue has been “lost.” But if polling and a series of state referendums don’t convince them of this, maybe the people who appear in this ad from Respect for Marriage Coalition (launched nationally today) will signal that there has been a sea change on the issue:

It must pain the left to see Laura Bush and Dick Cheney carrying the banner of marriage equality. It sort of messes up its narrative of the evil Bushies. But it should be pleased that this cause has such robust, bipartisan support.

So which is a bigger threat to traditional marriage — the people of Maryland voting for gay marriage or Mark Sanford declaring that his public deception and destruction of his family shouldn’t disqualify him from public office? Just asking.