ACT Labor have promised to introduce same-sex marriage if they win the territory elections in October.
The development came one day after the Tasmanian House of Assembly passed a same-sex marriage bill.
Speaking at a public forum for the LGBTI community, Deputy Chief Minister Andrew Barr committed the government to enacting the reforms.
The ACT government had pledged support for marriage reform, but previously said it would wait until the constitutional issues were resolved with Tasmania’s bill.
“The ACT government’s promise to introduce same-sex marriage laws shows that the momentum for this reform is unstoppable,” Australian Marriage Equality’s Alex Greenwich said.