A TV ad against same-sex marriage has been broadcast in Australia, ahead of a landmark vote on the issue.

The ad, produced by the anti-LGBT ‘Coalition for Marriage’, shows three mothers claiming that marriage equality will mean their sons are told to wear dresses and role-play gay relationships at school.

One mum, Cella White, tells the camera: ‘School told my son he could wear a dress next year if he felt like it.’

Another mother criticises equal rights legislation in other countries.

‘When same-sex marriage passes as law overseas, this type of programme become (sic) widespread and compulsory,’ she said.

The third mum laments that ‘kids in year seven are being asked to role play being in a same-sex relationship’.

At the end, the ad titles read: ‘In countries with gay marriage, parents have lost their right to choose. We have a choice. You can say no.’