Australia, you have just 14 days to register if you want to vote on same-sex marriage

Photo: Charles McQuillan/ Getty Images.

If you want to cast your opinion in the same-sex marriage postal vote, you have just 14 days to register.

The ABS has announced that voters not already on the electoral roll will have until August 24 to register with the Australian Electoral Commission.

If you have not registered before then you will not be able to vote in September when the postal votes are sent out.

The government is planning to hold a non-compulsory postal vote on the issue after the senate rejected plans to hold a compulsory plebiscite for a second time this week. But same-sex marriage advocates are launching High Court legal action to block the postal vote plan.

In the meantime, here’s where you can enrol to vote.

On Thursday, prime minister Malcolm Turnbull announced that if the postal vote is struck down by legal action, there won’t be a vote on the issue in parliament.

Read more on that here.