But as Australian Bureau of Statistics chief David Kalisch was announcing the results of the survey yesterday, there was another, smaller, reason to cheer: the reaction of Mandy Dolejši, the official sign language interpreter of the result.
"Her emotions got the better of her a couple of times today. A few more 'unforced errors' than usual for Mandy. Understandably," Matthew Toohey, one of her students, tweeted. We can't blame her either.
Twitter quickly picked up on the reaction, and people had overwhelmingly positive responses.
Many more celebrated the results.
Prime Minister Malcolm Turnbull said he intends to make marriage equality "the law of the land by Christmas."
"[Australians] have spoken in their millions and they have voted overwhelmingly yes for marriage equality," Turnbull said, according to the BBC. "They voted yes for fairness, yes for commitment, yes for love. And now it is up to us here in the parliament of Australia to get on with it."