The local option poll mentioned in the post referred to regular referanda held to determine whether prohibition should be introduced. Supposed to be held every 8 years - the ones in 1930 and 1938 were about 2 to 1 in favour of rejecting prohibition, but they did uphold 6 o'clock closing of pubs.
Interesting. I wonder if the same held true for Sydney. I don't know if the temperance movement was as strong in New South Wales as it was in Victoria, although I do recall reading once that Guildford (in Sydney's west) was a "dry" township when the area was first developed (not sure of exactly when, but I think it was immediately after the First World War).
The temperance movement certainly wasn't as strong in New South Wales as in Victoria, where the Methodist and Presbyterian churches were much more influential. A quick Google hasn't turned up anything about whether Guildford was founded as a dry town.
Ocean Grove in Victoria is a famous example of such a place however. The land on which the town stands was purchased by the Methodist Church in 1887 to be the site of a religious camp community, based on similar ones in the USA, including Ocean Grove, New Jersey.
To this day there remains a covenant on every block in the original township area, providing that "no part of the above land shall be used for the manufacture or sale of malted, spirituous, or vinous liquors". That explains why the only hotel serving Ocean Grove was built in the 1960s in adjoining Collendina, which was not part of the original Ocean Grove purchase.