But same-sex marriage advocates are confident the senate's rejection of a planned plebiscite won't stall momentum on the issue.
Now, though, the question becomes whether the federal government will allow a parliamentary vote on the matter.

The vote for the Same Sex Marriage Plebiscite Bill in the Senate chamber at Parliament House in Canberra, Monday, Nov. 7, 2016. Source: AAP
But same-sex marriage advocates are confident the senate's rejection of a planned plebiscite won't stall momentum on the issue.
Now, though, the question becomes whether the federal government will allow a parliamentary vote on the matter.