If it does issue a final proposal, a binding referendum on the issue can be forced if more than 10 per cent of voters in any of the affected council areas demand one.
Hastings Mayor Lawrence Yule said he questioned the accuracy of the HAA survey because its division of respondents across the four council areas did not quite accurately reflect the population spread and online polls tended to deliver a "more polarised result" than other surveys.
"More people tend to respond negatively to email and internet based polling systems," he said.
"There is a result there, but based on that I would say it is a more negative result than you would have got on a telephone poll."
Pro-amalgamation group A better Hawke's Bay said the survey "appears to be more of a media stunt than a true portrayal of public sentiment".
Napier Mayor Bill Dalton said the survey showed there was clear opposition to amalgamation in three of the four affected council areas, with only slight support in Hastings.
"The local Government Commission must have a look at this and say clearly it's not something that the people of Hawke's Bay want. They should simply withdraw their proposal, stop tearing the region apart, and let us get on and do the positive things that Hawke's Bay requires."
The commission declined to comment on the findings of the HAA survey yesterday.