Preliminary analysis of just over 400 responses:

• 53% of respondents oppose the Cannabis Legalisation and Reform Bill
• 30% support it
• 16% not sure
• 1% don't intend to vote

Supplementary question Mr Speaker: how representative of the general voting population are H&S practitioners?

It seems fairly consistent with the general population: https://en.wikipedia.org/wiki/2020_New_Zealand_cannabis_referendum#Opinion_polls_and_surveys

I can't remember what the questions exactly were In the survey but was there any data gathered on the reason why a respondent opposes/supports the bill? I can't find the attached file now but I have read that a lot of people are basing their choice on existing biases on how they feel about cannabis (one way or the other) and not actually answer the question ask which is "should cannabis be regulated and controlled differently" rather than "should cannabis be legal". The article was based on surveys where they found a large proportion of against actually changed their mind when they were given clear information about what the proposed legislation actually meant.
Of course take this reply with a large grain of salt as I can't seem to find the article I (at least think) I read!