Hauraki-Waikato is currently represented by Labour's Nanaia Mahuta, who won comfortably with a margin of 9,223. In 2017, Labour won the largest share of Hauraki-Waikato's votes – 63% to the Māori Party's 12%. The seat was established in 2008, and was previously called Tainui. Mahuta held Tainui since 2002, and Hauraki-Waikato since 2008. Boundary changes this year mean the electorate no longer includes Waiheke Island, and an area east of Manurewa.