The Tāmaki Makaurau seat could be returned to the Māori Party as the race for the seat tightens.
A Māori Television-Curia Market Research poll of 500 Tāmaki Makaurau voters found Labour's Peeni Henare is in the lead with 35 percent of the electorate vote and Māori Party co-leader John Tamihere is in second with 29 percent. Green Party co-leader Marama Davidson is in third with 14 percent.
The poll was released on Sunday and has a margin of error of 4.4 percent.
The same poll also found 57 percent of respondents will give their party vote to Labour, 9 percent to the Māori Party, 7 percent to the Greens, 5 percent to NZ First, 3 percent to National and 1 percent to ACT.
Poll respondents were also asked which party they would like to see Labour go into coalition with if it forms the next Government. More than one party could be selected as the answer for this question.
Fifty-four percent said the Greens should be in coalition with Labour, 42 percent said the Māori Party, 23 percent said NZ First and 6 percent said National.
On the End of Life Choice Act referendum, 50 percent said they will vote for it, 34 percent were against it and 16 percent were undecided.
A majority of respondents said they are voting for the Cannabis Legalisation and Control Bill, with 55 percent saying they'll vote 'yes', 29 percent will vote 'no' and 15 percent were undecided.