Folau, a devout Christian, tweeted on Wednesday afternoon: "I love and respect all people for who they are and their opinions. but personally, I will not support gay marriage".
Despite securing 70 percent public support in an Ipsos/Fairfax poll on Tuesday, the issue of same-sex marriage had faced a political deadlock, only broken last week when the Australian High Court gave the all-clear for the vote.
The person who posted the photo said they would "be voting yes. if it will even be counted now after this stuff up".
The automated call purports to be a survey, which asks receivers a series of questions related to the nation's upcoming postal vote on marriage equality, including whether and how the respondent plans to vote. It had a 2.6 percentage point margin of error.
Is CQ on track to vote 'no' in Same-Sex Marriage survey?
During a gathering for the launching of Australian Christians for Marriage Equality's Adelaide chapter, AnglicareSA chief executive Rev. Peter Sandeman said students and their parents have to be able to freely decide on which side to vote. He said he had been fighting discrimination against same-sex couples and mentioned that the entitlements they receive should also be extended to marriage, the BBC reported. Ballots have gone out by mail in a campaign that will last almost two months.
Keeping the marriage act as it is will protect the weakening of marriage as we know it.
The ballot helps Australian Prime Minister Malcolm Turnbull to unite his Liberal-National coalition government, which had been fractured over the issue throughout his two-year tenure. "But it provides limited protections", said Penny Wong, leader of the opposition in the senate.
"Action must be taken", Vote NO Australia Facebook page wrote. They also point to a Catholic bishop being referred to a state anti-discrimination agency over an anti-gay marriage letter he distributed in his dioceses. Abbott is campaigning against his lesbian sister Christine Forster, a Sydney local government councilor and a member of the same conservative party.