Same-sex marriage: 'Yes' and 'No' campaigns ramp up across Australia

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.

Same-sex marriage around the world

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.