Sydney Lord Mayor Clover Moore told a 300-strong crowd in Sydney's east that Opposition Leader Tony Abbott should allow Liberal MPs a conscience vote so his own gay sister can marry her partner.
In Melbourne, federal Greens deputy leader Adam Bandt's told thousands of people the Australian electorate favours of gay marriage.
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And in Brisbane, federal Labor MP Graham Perret told about two-thousand people that equal love belongs to all Queenslanders and all Australians and would prevent young gay people from harming themselves.
In the ACT, Attorney-General Simon Corbell said the territory's Civil Unions Bill is set to pass the Legislative Assembly when debated next week.
