Background
Horomia was born in Tolaga Bay of Ngāti Porou, Te Aitanga Hauiti, Ngāti Kahungunu and Ngāi Tahu descent.
Horomia was born in Tolaga Bay of Ngāti Porou, Te Aitanga Hauiti, Ngāti Kahungunu and Ngāi Tahu descent.
As a schoolboy he used to walk five kilometres to school and back without shoes. In his early life, he worked as a manual labourer, then as a printer in the newspaper industry. Later Horomia became involved in the Department of Labour"s East Coast work schemes and was appointed to supervisory positions—rising to general manager of the Community Employment Group by 1992.
At the same time, he began to take on a number of prominent positions with Māori community organisations.
In the 1999 elections, Horomia stood as the Labour Party candidate for the Ikaroa-Rāwhiti electorate, a Māori electorate on the east coast of the North Island, stretching from Gisborne to Upper Hutt. He defeated Derek Fox, a prominent figure in Māori politics who was standing as an independent candidate.
In 2000, Dover Samuels was forced to step down as Minister of Māori Affairs after criminal allegations were made against him, and Horomia was appointed in his place. Although Samuels was cleared, it was decided that Horomia would retain the Māori Affairs portfolio.
Labour was defeated in the 2008 general election, but Horomia retained his seat – increasing his majority to about 1600.
This was despite a challenge from well-known broadcaster Derek Fox. Horomia was overweight for much of his life. He talked about his health battles and tried to lose weight many times.
In 2004 he went on a public diet to encourage others to do the same.
He died at his home on 29 April 2013 at the age of 62. As Horomia was an electorate Member of Parliament, a by-election was held on 29 June 2013 to elect a replacement.
Tributes after his death came from not only his Labour Member of Parliament colleagues, but also the opposition. Labour leader David Shearer cut short a trip to Washington to attend his funeral and said he had "an incredible work ethic, travelling to all parts of the country.
He was accepted at pretty much every marae in the country, he was incredibly well-liked, had enormous heart, who worked so hard for his people." His tangi was held the following week, and the funeral on 4 May.