The Green Party has been in every Parliament since 1999, but unless the party can turn Newshub's latest poll result around, this year its streak could end.

The latest Newshub-Reid Research poll has the Greens on 4.9 percent, just below the 5 percent threshold required to enter Parliament without the security of an electoral seat win.

The Green Party typically does slightly better in Newshub polls compared to its election-day result.