The youth wings of five political parties have come out in support of the gay marriage bill that will come up for debate in Parliament on Wednesday.
Young Nationals, Young Labour, Young Greens, ACT on Campus and Mana Rangatahi issued a joint statement today urging their MPs to vote for Labour MP Louisa Wall's bill.
Young Nats president Sean Topham says members have been lobbying MPs "from day one" while Young Labour spokesman Sam Thompson says marriage equality was voted "number one priority" at its conference.
The Young Greens don't need to lobby their MPs - all 14 have said they will support the bill.
ACT on Campus has previously challenged its only MP, party leader John Banks, to support the bill or face losing youth wing support.
Mr Banks is a conservative who voted against civil unions.
Mana Rangatahi, the youth wing of the Mana Party, says it's delighted party leader Hone Harawira is going to support the bill.
The bill will come up for its first reading on Wednesday, although it might not get to a vote before Parliament adjourns.
A survey published in the New Zealand Herald today suggests it has the numbers to get through its first reading.
MPs will cast conscience votes and the survey found 61 were committed to backing it, 17 were against it and the rest were undecided or wouldn't comment.
Prime Minister John Key has said he will back the bill all the way to its third reading, and Labour leader David Shearer is also supporting it.
NZN