The votes have been counted, and this is what Australia voted for in the same-sex marriage postal vote.
However, even with the "Yes" vote getting up, the survey result is non-binding on the Australian Government to legalise same-sex marriage.
This would lead to a parliamentary debate and a vote to determine the legalisation of same-sex marriage.
Prime Minister Malcolm Turnbull told 2Day FM he was offended by such posters while defending the vast majority of people who do not agree with same-sex marriage, as not homophobic.
"I don't believe Australians would welcome, and certainly the Government. would not countenance making legal, discrimination that is illegal, that is unlawful today", he said.
More than 30 business leaders, including the chief executive officers of Commonwealth Bank of Australia and Telstra Corp., this year petitioned the government to introduce legislation on same-sex marriage.
But marriage equality advocates have slammed any moves to imposed new conditions on the LGBTQ community.
Liberal senators Linda Reynolds and Jane Hume, Labor's Penny Wong and Louise Pratt, the Greens' Richard Di Natale and Janet Rice, Skye Kakoschke-Moore from the Nick Xenophon Team and Derryn Hinch all signed the motion with Smith.
Liberal senator Dean Smith, who has authored a bill which would legislate marriage equality, has asked Parliament to begin the debate on Thursday. They have flagged the possibility of amendments, potentially cherry-picked from Liberal senator James Paterson's rival bill, which would give wide-ranging exemptions and wind back existing anti-discrimination laws.
An estimated 13 million Australians have returned their postal surveys in the nationwide ballot - a bigger percentage than voted in the UK's Brexit referendum.
She said the outcome will boost marriage equality campaigners in Northern Ireland and elsewhere.