Te Tai Hauāuru is a geographically vast Māori electorate covering the western side of the North Island, stretching from the King Country and Tokoroa in the north, through Taranaki and Whanganui, down to Porirua in the south. It is an area of immense tribal diversity, encompassing the rohe of iwi such as Ngāti Ruanui, Ngāti Apa, Ngāti Toa, and the politically significant Rātana movement near Whanganui. The electorate has a distinct working-class character, with a diverse economy ranging from dairy farming and energy production in Taranaki to the urban service sectors of Palmerston North and Porirua. Politically, the seat has a history of independent thought and strong leadership. It was the power base for Dame Tariana Turia, who founded the Māori Party (now Te Pāti Māori) after crossing the floor from Labour. After a period of Labour representation under Adrian Rurawhe, the seat returned to Te Pāti Māori in the 2023 general election. It is currently held by party co-leader Debbie Ngarewa-Packer, who defeated the Labour candidate with a convincing majority, solidifying the party's resurgence in its spiritual heartland. In the 2025 boundary review a minor technical adjustment was made to the boundary between Te Tai Tonga and Te Tai Hauāuru.