The Vote Yes campaign is about preserving s59 of the Cirmes Act, which gives children the same right as adults to not be assaulted. More information here.
[just a couple of quick suggestions to the Vote Yes people: 'Vote yes, for a law that's working' is a bad slogan, it doesn't exactly stir the passions. Try 'Vote yes, stand up against child abuse' or something. On your flyer, the best message is "a yes vote will protect children" but in a printed copy the dark background image makes it nearly illegible. Also, too many words and too legalistic]