The Australian Greens have resolved to vote against any legislation enabling a plebiscite on marriage equality.

"No matter what the enabling legislation for a plebiscite looks like, the Greens will vote against it. We should never put questions of human rights to an opinion poll," said Greens Leader Richard Di Natale.

"The easiest, simplest, quickest, most effective, least costly and least harmful way of ensuring equality in marriage is through a vote in the parliament, and we can do that next week should the Prime Minister decide to show some leadership.

Expect more delays, says Greens Leader Richard Di Natale, unsurprised that Prime Minister Malcolm Turnbull has pushed his promised plebiscite on marriage equality off to next year

"Delays are the entire point of the Liberals' plebiscite ploy. They don't want to end discrimination in the law, they want to push it off to the never-never," Senator Di Natale said.

"The Parliament could pass marriage equality into law next Tuesday, but instead the Liberals want to run a costly and divisive public vote that may be ignored by many of their so-called representatives anyway.

The Greens are disappointed that the Australian Labor Party has sided with the Liberals to prevent a vote on marriage equality in the parliament today.

"Earlier today in a last ditch effort to derail senate reform, Labor tried to drag out debate on marriage equality. The Greens opposed this and instead moved to actually vote for marriage equality," Greens marriage equality spokesperson Senator Robert Simms said.

This edition of the Marriage Equality and Sexuality Update e-newsletter covers Senator Simms' first speech, the Greens' Wedding Crashers campaign for a free vote on marriage equality, Minus18's Same-Sex and Gender Diverse Formal, access to PrEP, overturning the ban on blood donation, and more. Simply click the link below to download the PDF.