If the 2010 election put marriage equality firmly on the political agenda, the 2013 election has seen it move to the centre of the Australian political stage.
This is partly because of Kevin Rudd's decision to prioritise reform and Tony Abbott's out-of-touch remarks about it being a passing fashion.
But it's mostly because marriage equality is such a high priority for young Australians.
Polls show they support reform so strongly it will affect the outcome in several key inner-city seats, and possibly even the outcome of the election itself.
For example, a recent Galaxy poll found over 50% of young people are more like to vote Labor because of Rudd's stance, while an Australian Institute survey found same-sex marriage rates as one of the most important issues for young voters above climate change and asylum seekers.
Future historians will write books on how marriage equality came to be a signature issue for an entire generation.
But the more immediate question is what it means for the future of marriage equality and the LGBTI community.
The obvious implication is that young Australians will continue to demand reform regardless of who wins government.
“The obvious implication is that young Australians will continue to demand reform regardless of who wins government.”
Tony Abbott may feel the issue will die away like the republic.
Kevin Rudd may think he's done as much as he can by introducing a bill in the first 100 days.
But expectations are so high, whoever leads the major parties after the election will be under even more pressure to move forward than the current incumbents.
Just as important, anti-equality advocates suddenly find themselves in a completely new environment they are not adapting to.
Commentators like Greg Sheridan trot out old lines about the suburbs punishing Labor with no idea it's just his wishful thinking.
Anti-gay advocates like David van Gend talk about the "chaos" caused by marriage equality unaware of the millions of tin ears turned their way.
They alone now occupy the field on which, a decade ago, they declared a marriage culture war, not because they won, but because their war was always a fiction.
Most important, the experience of young same-sex attracted people will be very different from their forebears.
Their world is one that can’t stop talking about them, not one that can barely speak their name.
This poses its own challenges, of course, but of a kind that older LGBTI people can barely imagine.
How the next generation respond to these challenges will shape new and utterly different ideas of sexual difference in the decades to come.