New Zealand First leader Winston Peters is vowing to move Auckland's port to Northland.
Mr Peters, who is also the MP for Northland, said he wants to move Auckland's car import trade to Northport at Marsden Point in Whangarei within two years, followed by the container trade within a decade.
"Aucklanders want their harbour back while Northlanders want the jobs and opportunity that would come from Northport's transformation," Mr Peters said.
The pledge is a cast iron commitment, he said, but was conditional on his party being in a pivotal position after the elections and voters in Auckland and Northland needed to adjust their ballot, he said.
Ports of Auckland is owned by the Auckland Council which has yet to make any long-term decisions about its future.