If the Greens had a spine they would have made legalized cannabis sales for adults a bottom line if Labour wanted to be in government in 2017.
Either we would have got it without the referendum malarkey.
OR
We would have given English and the Nats the poison pill of governing with Winston First for 3 years (or less), and Labour a hard lesson in not taking the Greens for granted as a crutch. But I'm guessing Labour's greed for power would have been too strong for that.