Mount Roskill is a parliamentary electorate in Auckland, New Zealand, returning one Member of Parliament (MP) to the New Zealand House of Representatives. Phil Goff of the Labour Party held the seat from the until he resigned from Parliament on 12 October 2016 after contesting and being elected Mayor of Auckland on 8 October 2016 in the 2016 mayoral election. His resignation necessitated a byelection in this electorate which was won by Michael Wood. Mount Roskill is located on the western side of the Auckland isthmus, bordering the Manukau Harbour. It is anchored around the suburbs of Mount Roskill, Three Kings, Hillsborough and a large section of Balmoral. The boundaries added in Lynfield and New Windsor at the expense of Onehunga, which returned to the electorate after being cut out in 1999. The Mount Roskill electorate is working class and multi-ethnic, with a high Pacific Island and Asian population, and has the highest number of overseas-born residents of any New Zealand electorate, nearly 40 per cent (as of 2001). History The 1996 New Zealand census showed population growth in the north and west of Auckland, necessitating the redistribution of electorates for the . The existing seat was renamed , with its boundaries shifted to fall in between Auckland and Waitakere cities. The eastern side of the New Lynn residential area was amalgamated with the population excess of , the southern half of seat (which was itself renamed ) and the western end of to form a new seat. Named Mount Roskill, it was the first new seat drawn since the introduction of Mixed Member Proportional voting three years previous. At the 2020 redistribution it gained New Windsor from at the expense of Royal Oak, which moved to . So far there have been two MPs for Mount Roskill, both of the Labour Party, Phil Goff and Michael Wood. Goff was the first representative, having previously held New Lynn, another electorate in Auckland, and , an electorate covering much of the same area as Mount Roskill. After Goff was elected Mayor of Auckland in October 2016, a by-election date was set for 3 December 2016. Michael Wood won the by-election with more than half the votes. Members of Parliament Key List MPs Members of Parliament elected from party lists in elections where that person also unsuccessfully contested the Mount Roskill electorate. Unless otherwise stated, all MPs terms began and ended at