Rebecca Turner said A Better Hawke's Bay (ABHB) was "very disappointed" by the landslide loss the pro-amalgamation lobby suffered.
"We still stand by the need for one voice and one regional plan and a structure to take Hawke's Bay forward," the ABHB Chairman said.
"But the people have spoken and that has to be respected, it was a democratic process."
Ms Turner, speaking from Auckland Airport on her way to her son's wedding in the United States, said nobody from her side predicted such a swing.
"I think that there was a lot of misinformation out there," she said.
"It became evident during the voting period that people were voting emotionally either from a place of hope for the future of from fear of change.
"And I think that the scaremongering and the fear tactics that were used in this perhaps got to people.