There's one clue for opponents of same sex marriage in a just released survey published by the Australian National University: don't have priests spruiking your message. Ministers of religion are held in low regard. And their contribution to society is rated the lowest among the 16 professions rated.
The Australian Beliefs and Attitudes Towards Science Survey found that the top three professions that most Australians rate as contributing a lot to the wellbeing of society are scientists (80.9%), followed very closely by doctors (80.5%) and then farmers (78.5%). The top three profession that most Australians rated as very prestigious were doctors (72.9%), followed by scientists (62.1%) and then engineers (55.2%)