She is of Tongan heritage and is married to university academic Damon Salesa.[2] Prior to entering Parliament Salesa had worked in the public sector, and overseas in the United States.[3]
During the 2017 New Zealand general election held on 23 September, Salesa retained Manukau East by 12,589 votes, beating the National Party candidate Bakshi.[7]
In mid-October 2017, Salesa was elected as a Cabinet Minister by the Labour Party caucus following Labour's formation of a government with New Zealand First and the Greens.[8] She was appointed Minister for Building and Construction and Minister of Ethnic Communities, and Associate Minister of Education, Health, and Housing and Urban Development.[9]
When the new Cabinet was announced following the election, Salesa lost all her ministerial positions. She was instead nominated for the role of Assistant Speaker.[13] On 9 November 2020, Salesa was granted retention of the title "The Honourable" for life, in recognition of her term as a member of the Executive Council.[14] She was officially appointed an Assistant Speaker on 26 November.[15]
In opposition, 2023–present
During the 2023 New Zealand general election, Salesa retained the Panmure-Ōtāhuhu electorate by 7,970 votes, defeating National's candidate Navtej Randhawa.[16]