"There was a small change in the proportion of voters on each roll," Bohté said.
"Of those who opted to change rolls, more moved from the Māori roll to the general roll, and when it came to new enrolments, more opted for the Māori roll."
The data will be provided to Statistics New Zealand which will use the results, along with information from the Census, to calculate the number of Māori and general electorates for the next two elections.
Statistics New Zealand is working towards releasing the number of electorates in March 2019.
There are currently seven Māori electorates and that number could increase, decrease or stay the same.
After the number of electorates has been calculated by the Government Statistician, the Representation Commission will be convened to determine the electorate boundaries and the names of the electorates for the 2020 and 2023 general elections.
For an electorate breakdown and previous Māori Electoral Option results go to www.elections.org.nz/meo/results.