McCain's gay chief of staff

From Michael Signiorelli's The Gist: Hypocrisy Bombshell: Antigay John McCain has a Gay Chief of Staff:

What does John McCain’s loyal chief of staff – a man who apparently is in a long-term relationship with another man, and appears to be open about it to John McCain -- think about the fact that Sarah Palin devoutly worships at a church that promotes “converting” gays to heterosexuality? What, conversely, does she think of him? More importantly, what does John McCain think about all of this? And don’t we deserve some answers from the American media?

Over the past month I’ve been contacted by three different individuals (two of them members of the Log Cabin Republicans) claiming that McCain’s Senate chief of staff, Mark Buse, is gay. None of these individuals would be quoted by name, though each described Buse as being rather “open” to those around him and to his family – in a “glass closet” rather than deeply undercover or trying to appear heterosexual.

There's more chatter at DailyKos and Towleroad.