Pretty amazing that 20% didn't bother to vote.
Actually, 80% is, I suspect, not a bad turnout. It would be interesting to break down the vote unit by unit, however. If the 73/27% split of the vote is correct well fair enough. Democracy is democracy after all. But I think the fact that 27% voted against an offer that the BEC thought would be universally accepted has perhaps got the message across.
Let's hope they don't make the same mistakes again.