Te Tai Tonga is a New Zealand parliamentary Māori electorate, returning one Member of Parliament to the New Zealand House of Representatives. It was established for the 1996 general election, replacing Southern Maori. The current MP for Te Tai Tonga is Rino Tirikatene of the Labour Party. Population centres Te Tai Tonga is geographically by far the largest of the seventy-one electorates of New Zealand, covering all of the South Island, Stewart Island, the Chatham Islands, all the islands in the Southern Ocean and a large part of the Wellington urban area, namely Wellington City as far as Churton Park, and Lower Hutt City south of Naenae and west of Wainuiomata. Besides Wellington, the main centres in Te Tai Tonga are Nelson, Christchurch, Timaru, Oamaru, Dunedin, Queenstown, and Invercargill. As a Māori electorate, Te Tai Tonga overlaps with the sixteen South Island electorates, as well as Rongotai and Wellington Central, and parts of Ōhāriu and Hutt South. Te Tai Tonga's size was marginally decreased after a review of boundaries in 2007, when the suburbs of Naenae and Taitā were moved into Ikaroa-Rāwhiti. The 2013/14 redistribution did not further alter the boundaries of the electorate. The 2019/20 redistribution adjusted the north-east boundary to align with the northern boundary of Hutt South. The main iwi of Te Tai Tonga are Ngāi Tahu/Kāi Tahu, Kāti Māmoe and Waitaha, and in the North Island, Te Āti Awa ki Whakarongotai, Ngāti Toa Rangatira and Ngāti Poneke, that latter of which is not iwi in the traditional sense, but an urban pan-tribal grouping. The Chatham Islands was invaded by members of Ngāti Mutunga and Ngāti Tama, and their descendants live there today, alongside the indigenous Moriori. History Te Tai Tonga was established for the 1996 general election, replacing Southern Maori which had existed since the first Māori elections in 1868. The 1996 election was the first to use the Mixed Member Proportional (MMP) voting system and a new formula for calculating the number of electorates, which resulted in an increase in the number of Māori electorates from four to five. The main difference involves the separation of the Wairarapa and Hawke's Bay into seats wholly located in the North Island—initially Te Puku O Te Whenua, and since 1999 Ikaroa-Rāwhiti. Whetū Tirikatene-Sullivan had served as Southern Maori's representative in Parliament since 1967—during the terms of five different governments and nine Prime Ministers. However, the New Zealand First