Mr Hernandez also believed his party could pip Labour for the party vote in his electorate.
"At this stage of the polling, we would like to be around 22% [in Dunedin], but we’re aiming to win the party vote in Dunedin."
In the 2020 general election, the Greens received 17.7% of the party vote in the Dunedin electorate, more than double its nationwide vote of 7.9%.
Labour received 55.2% of the party vote in Dunedin, comparable to its nationwide party vote of 50%.
However, recent polling has put Labour below 30% nationwide.
Mr Hernandez, who is 17th on the Green Party list, said he was ‘‘optimistic’’ of being elected to Parliament as the party climbed as high as 12% nationally in recent polling.