Equality Campaign co-leader Alex Greenwich has urged same-sex marriage supporters not to get distracted by those who "throw red herrings".
Both sides of the marriage debate ramped up their campaigning on Saturday with rallies, door-knockings and text message among the mediums used.
Thousands rallied through Brisbane for the annual pride festival while "yes" campaigners doorknocked tens of thousands of homes across the nation.
Meanwhile, a smattering of same-sex marriage opponents gathered in Sydney's gay heartland while preparations were made for the Coalition for Marriage's Victorian launch.
Melbourne campaigner Cella White - accused of falsely claiming her son was told he could wear a dress to Frankston High School - is expected to speak at the CFM event on Saturday night about the abuse she has received since appearing in the group's anti-gay marriage ad.
Mr Greenwich, who is a NSW MP, urged supporters of the Yes campaign to focus on the task at hand.
"It is so important for the marriage equality campaign that we do not get distracted by the people who are always trying to throw red herrings," he told AAP.
He said he was heartened by the feedback from same-sex marriage supporters involved in the door-knocking campaign and said there was strong support "across all demographics, all ages".
The campaign also extended to SMS with a message urging people to "vote YES for a fairer Australia" and help make history.
On the other side of the debate, about 20 people turned out for a rally dubbed Straight Lives Matter rally in Sydney's LGBTIQ heartland, Darlinghurst.
Organised by a group of self-described patriots, one of the speakers urged people to push back against the "sick and vile homosexual agenda" in Australian schools and universities.
"No amount of surgical mutilation by some dodgy surgeon in the Philippines can make you a woman," Toby Cooke said.
Australian Christian Lobby chief Lyle Shelton, and Keith Mills, the leader of Ireland's unsuccessful No campaign, are expected to address the Coalition for Marriage in Melbourne.
CFM has this week been holding meetings across Australia to convince voters to reject a change to the legal definition of marriage.
The result of the voluntary postal survey on same-sex marriage is due on November 15.
