06/09/2017 4:59 PM AEST | Updated 06/09/2017 5:01 PM AEST

High Court To Hand Down Postal Survey Decision On Thursday

At 2.15pm we'll all find out if the Government's survey will go ahead.

Challengers to the government's SSM survey head into court.

The High Court will deliver on Thursday afternoon its decision on whether the Government's same-sex marriage postal survey can go ahead.

For the past two days the full bench of the High Court has heard two challenges to the Federal Government's controversial and non-binding survey on changing the Marriage Act to recognise same-sex marriages.

The court is expected to deliver its decision at 2.15pm on Thursday.

On Wednesday Commonwealth Solicitor-General Stephen Donaghue defended the survey as appropriate use of a government contingency fund, while opponents spent the previous day challenging the scheme.

Essentially the court is being asked to decide if the postal survey is a vote or a collection of statistical data, and if the Australian Bureau of Statistics (ABS) has the authority to conduct the poll.

The government is drawing $122 million from a fund available for "urgent and unforeseen" items to run the ballot -- money it says it appropriated lawfully.

Survey papers are expected to be sent to households throughout the country from early next week.