Labour leader Jacinda Ardern will visit Tauranga tomorrow to announce the party's regional transport policy.

A party spokesman said the policy announcement would cover road and rail, and would be announced at a public event at the Edgewater Fan on the Tauranga waterfront at 10.30am.

From there Ms Ardern was scheduled to head to Merivale School, where Labour's Tauranga candidate Jan Tinetti was principal for 11 years. She stepped aside on August 11 to campaign fulltime.

Ms Ardern, who has been the party's leader for two weeks, will leave Tauranga about 1pm.

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At Labour's campaign launch today, Ms Ardern targeted climate change as a priority area, saying it was "my generation's nuclear-free moment".

She was given a rapturous reception by newly energised party faithful at an event that included a star appearance by Helen Clark, MCing by comedian Michele A'Court, singer Hollie Smith, and an endorsement speech by party supporter Don McGlashan.

There was no new policy in her speech, but Ardern set out the areas she intended to emphasise as leader, including children and climate change.