A Labour Party bill seeks to put an end to so-called conversion therapy – a controversial practice which uses psychotherapy to reduce or stop same-sex attraction.
Labour List MP Marja Lubeck submitted the bill to the members' ballot, meaning it has a one in 66 chance of being drawn and debated in the House.
Lubeck said conversion therapy is a harmful practice and has no place in New Zealand.
An investigation by TVNZ's Sunday in June this year revealed it was "surprisingly easy" to find people or organisations offering conversion therapy for sexual orientation in New Zealand.
Lubeck's bill, the Prohibition of Conversion Therapy Bill, prohibits any person from advertising, offering, or performing a treatment that seeks to change a person's sexual orientation or gender identity in New Zealand.