SOUTH-WEST Labor party members have backed a push to legalise gay marriage after the party’s state conference officially flagged its support for the reform.

Labor’s Victorian branch at the weekend became the latest state division to endorse legal recognition of same-sex relationships, putting greater political pressure on Prime Minister Julia Gillard ahead of the party’s national conference in December.

Hundreds of delegates clapped and cheered at the conference in Melbourne on Saturday when the resolution was passed with only a small number of members voting against it.