SUPPORTERS of same sex marriage have rallied to their cause in central Perth where they were warned against complacency.

About 400 people gathered at Wellington Square where speakers including Federal and State MPs encouraged West Australians to fill in and post marriage survey ballots which started hitting WA letterboxes last week.

WA Greens MLC Alison Xamon implored the crowd to reach out to friends and families to get the ‘Yes’ vote over the line.

“It’s up to us,” she said. “We need to reach out to those Australians who may not yet have made up their minds, or just as concerning, who are likely to vote yes but for whatever reason can’t be stuffed participating in the ballot.”

Liberal Senator Dean Smith told conservative voters in the crowd that voting yes was very much in the Liberal tradition of equal rights before the law.

Speaking before the rally, national ‘Yes’ campaign director Tiernan Brady said the outcome of the vote was critical to real people.

“Lesbian and gay people are our friends, they’re our family members, they’re our work colleagues and they’re our teammates and they should be entitled to the same aspirations and status that’s available to everybody else in our country,” he said.

“Our message today is it’s so important that you vote. If you want to see this happen don’t be complacent, don’t think that someone else will cast their ballot – you have to cast your ballot if you want to see marriage equality become the law of the land.”

Mother of four sons Anna Bruno, who appeared on My Kitchen Rules with her gay son Jordan, said it was “only fair that they should all be treated equally”.

Jordan said marriage rights should not set him apart from his three straight brothers.

“We’ve grown up together, we’ve worked together, we’ve played together, we’ve done everything together and there’s no difference between us,” he said.

“They want to attend my wedding day as much as I want to attend theirs.”

‘Yes’ rallies, which were held across the country today, came as the ‘No’ campaign also began in earnest with a launch at Darling Harbour in Sydney last night.

“Vote No” was written by a skywriting plane over Sydney today.