# Helensville (New Zealand electorate)

Helensville was a New Zealand parliamentary electorate in the Auckland region, returning one Member of Parliament to the House of Representatives. The electorate was first established for the 1978 election, was abolished in 1984, and then reinstated for the 2002 election. The seat was won and held by John Key through his term as prime minister. Chris Penk of the National Party held the seat from the 2017 general election until its abolition in 2020, when it was replaced with the new Kaipara ki Mahurangi electorate, which Penk also retained.

## Population centres

The 1977 electoral redistribution, initiated by Robert Muldoon's National Government, was the most overtly political since the Representation Commission had been established through an amendment to the Representation Act in 1886. As part of the 1976 census, a large number of people failed to fill in an electoral re-registration card, and census staff had not been given the authority to insist on the card being completed. This had little practical effect for people on the general roll, but it transferred Māori to the general roll if the card was not handed in. Together with a northward shift of New Zealand's population, this resulted in five new electorates having to be created in the upper part of the North Island. The electoral redistribution was very disruptive, with 22 electorates being abolished, and 27 (including Helensville) being newly created or re-established. These changes came into effect for the 1978 election.
In the 1983 electoral redistribution, the Helensville electorate was abolished, and its area went to the West Auckland and Rodney electorates. Helensville was re-established in time for the 2002 election in response to continued high population growth in and around Auckland. It was formed from the northern flank of the Waitakere electorate with the addition of areas from the Rodney electorate around its southern boundary.
Helensville covers an area of the rapidly growing northern Auckland urban fringe, drawing Helensville and Kumeū from the former Rodney District, moving south to take in Paremoremo, Greenhithe and Albany from the former North Shore City, and finally tacking west to include Whenuapai, Hobsonville and West Harbour from the former Waitakere City.
The boundaries of the electorate changed significantly in the 2019/20 boundary review. Its northern boundary moved northward to become the same as the boundary between the Northland and Auckland local government regions, taking in part of the Northland electorate and all that part of Rodney electorate north of Waiwera, which is, by area, most of Rodney. On the other hand, an area running from Dairy Flat south to Paremoremo moved into Rodney, which is renamed the Whangaparāoa electorate. Helensville also gained the suburb of Westgate from the Upper Harbour electorate. It lost its southern section around the Waitakere Ranges to New Lynn. It was initially proposed that the electorate would keep the name Helensville, but after public submissions it became the Kaipara ki Mahurangi electorate.

## History

In the 1978 election, the Helensville electorate was won by Dail Jones, who had been MP for the Waitemata electorate since the 1975 election. When the Helensville electorate was abolished in 1984, Jones stood in the West Auckland electorate in the 1984 election but was defeated by the Labour Party candidate, Jack Elder.
The Helensville electorate was re-established for the 2002 election. Newcomer John Key beat sitting Waitakere MP Brian Neeson to the National Party nomination and, in a tight year for his party, won the electorate by 1,705 votes in a split field when a disgruntled Neeson stood as an independent. At the same election, Dail Jones contested the electorate for New Zealand First. Helensville was partly rural and was wealthy beyond the national average, making it a safe National electorate, and Key was returned easily in 2005, 2008, 2011 and 2014 with large majorities. Key became National Party leader in 2006 and prime minister in 2008. In December 2016, he announced that he would retire from politics before the 2017 general election. He was replaced as Helensville MP by Chris Penk.

### Members of Parliament

Key
National NZ First Labour ACT Green
| Election | Winner |
| 1978 election | Dail Jones |
| 1981 election | Dail Jones |
| Electorate abolished in 1984 (see West Auckland and Rodney) |||
| 2002 election | John Key |
| 2005 election | John Key |
| 2008 election | John Key |
| 2011 election | John Key |
| 2014 election | John Key |
| 2017 election | Chris Penk |
| (Electorate abolished in 2020; see Kaipara ki Mahurangi) |||

### List MPs

Members of Parliament elected from party lists in elections where that person also unsuccessfully contested the Helensville electorate. Unless otherwise stated, all MPs terms began and ended at general elections.
| Election | Winner |
| 2002 election | Dail Jones |
| 2008 | Dail Jones$^1$ |
| 2008 election | Darien Fenton |
| 2008 election | David Garrett$^2$ |
| 2009 | David Clendon$^3$ |
| 2014 election | Kennedy Graham |
$^1$ Jones entered Parliament in February 2008 following the resignation of Brian Donnelly $^2$ Garrett resigned in September 2010, and his list position was taken by Hilary Calvert $^3$ Clendon entered Parliament in October 2009 following the resignation of Sue Bradford

## Election results
### 2017 election

2017 general election: Helensville :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | National | Chris Penk | Chris Penk | 21,704 | 56.12 | −9.05 | 21,958 | 55.83 | −2.56 |
| | Labour | Kurt Taogaga | Kurt Taogaga | 7,096 | 18.35 | +5.66 | 10,012 | 25.45 | +12.95 |
| | Green | Hayley Holt | Hayley Holt | 6,758 | 17.47 | +4.75 | 2,971 | 7.55 | −6.00 |
| | NZ First | Helen Peterson | Helen Peterson | 2,403 | 6.21 | — | 2,795 | 7.11 | −0.25 |
| | ACT | Alex Evans | Alex Evans | 284 | 0.73 | -0.14 | 319 | 0.81 | +0.07 |
| | Conservative | | | | | | 87 | 0.22 | −4.56 |
| | Opportunities | | | | | | 799 | 2.03 | — |
| | Legalise Cannabis | | | | | | 112 | 0.28 | −0.17 |
| | Māori Party | | | | | | 105 | 0.27 | −0.27 |
| | United Future | | | | | | 27 | 0.07 | −0.19 |
| | Outdoors | | | | | | 20 | 0.05 | — |
| | Ban 1080 | | | | | | 20 | 0.05 | −0.09 |
| | Mana Party | | | | | | 13 | 0.03 | — |
| | People's Party | | | | | | 12 | 0.03 | — |
| | Internet | | | | | | 9 | 0.02 | — |
| | Democrats | | | | | | 7 | 0.02 | −0.04 |
| Informal votes | Informal votes | Informal votes | Informal votes | 264 | | | 67 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 38,676 | | | 39,333 | | |
| | National hold | National hold | Majority | 14,608 | 37.77 | −14.69 | | | |

### 2014 election

2014 general election: Helensville :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | National | Y John Key | Y John Key | 22,720 | 65.17 | −9.21 | 20,689 | 58.39 | −7.40 |
| | Green | Kennedy Graham | Kennedy Graham | 4,433 | 12.72 | +5.36 | 4,801 | 13.55 | +4.91 |
| | Labour | Corie Haddock | Corie Haddock | 4,425 | 12.69 | −1.45 | 4,430 | 12.50 | −1.85 |
| | Internet | Laila Harré | Laila Harré | 1,315 | 3.77 | +3.77 | | | |
| | Conservative | Deborah Dougherty | Deborah Dougherty | 963 | 2.76 | −0.07 | 1,692 | 4.78 | +1.27 |
| | Independent | Penny Bright | Penny Bright | 420 | 1.20 | +1.20 | | | |
| | ACT | Phelan Pirrie | Phelan Pirrie | 302 | 0.87 | +0.36 | 262 | 0.74 | −0.65 |
| | Independent | Brendan Whyte | Brendan Whyte | 74 | 0.21 | +0.21 | | | |
| | NZ First | | | | | | 2,608 | 7.36 | +2.76 |
| | Internet Mana | | | | | | 338 | 0.95 | +0.78 |
| | Māori Party | | | | | | 192 | 0.54 | +0.02 |
| | Legalise Cannabis | | | | | | 161 | 0.45 | −0.04 |
| | United Future | | | | | | 93 | 0.26 | −0.20 |
| | Ban 1080 | | | | | | 48 | 0.14 | +0.14 |
| | Democrats | | | | | | 23 | 0.06 | +0.04 |
| | Independent Coalition | | | | | | 13 | 0.04 | +0.04 |
| | Civilian | | | | | | 8 | 0.02 | +0.02 |
| | Focus | | | | | | 3 | 0.01 | +0.01 |
| Informal votes | Informal votes | Informal votes | Informal votes | 208 | | | 73 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 34,860 | | | 35,434 | | |
| Turnout | Turnout | Turnout | Turnout | 35,507 | 82.29 | +5.65 | | | |
| | National hold | National hold | Majority | 18,287 | 52.46 | −7.78 | | | |

### 2011 election

2011 general election: Helensville :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | National | Y John Key | Y John Key | 26,011 | 74.38 | +0.77 | 23,558 | 65.79 | +2.09 |
| | Labour | Jeremy Greenbrook-Held | Jeremy Greenbrook-Held | 4,945 | 14.14 | -2.97 | 5,138 | 14.35 | -4.11 |
| | Green | Jeanette Elley | Jeanette Elley | 2,575 | 7.36 | +1.41 | 3,094 | 8.64 | +3.74 |
| | Conservative | Richard Drayson | Richard Drayson | 941 | 2.69 | +2.69 | 1,258 | 3.51 | +3.51 |
| | Legalise Cannabis | Adrian McDermott | Adrian McDermott | 319 | 0.91 | +0.91 | 174 | 0.49 | +0.16 |
| | ACT | Nick Kearney | Nick Kearney | 180 | 0.51 | 0–1.72 | 499 | 1.39 | -5.31 |
| | NZ First | | | | | | 1,648 | 4.60 | +2.06 |
| | Māori Party | | | | | | 186 | 0.52 | +0.03 |
| | United Future | | | | | | 163 | 0.46 | -0.33 |
| | Mana | | | | | | 60 | 0.17 | +0.17 |
| | Libertarianz | | | | | | 19 | 0.05 | -0.004 |
| | Democrats | | | | | | 8 | 0.02 | +0.001 |
| | Alliance | | | | | | 4 | 0.01 | -0.04 |
| Informal votes | Informal votes | Informal votes | Informal votes | 574 | | | 198 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 34,971 | | | 35,809 | | |
| | National hold | National hold | Majority | 21,066 | 60.24 | +3.74 | | | |
Electorate (as at 11 November 2011): 46,983

### 2008 election

2008 general election: Helensville :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | National | Y John Key | Y John Key | 26,771 | 73.61 | +9.51 | 23,559 | 63.69 | +8.60 |
| | Labour | Darien Fenton | Darien Fenton | 6,224 | 17.11 | -9.77 | 6,826 | 18.45 | -9.52 |
| | Green | David Clendon | David Clendon | 2,166 | 5.96 | +5.79 | 1,814 | 4.90 | +0.87 |
| | ACT | David Garrett | David Garrett | 811 | 2.23 | +1.10 | 2,481 | 6.71 | +4.36 |
| | United Future | Angela Lovelock | Angela Lovelock | 309 | 0.85 | -0.82 | 289 | 0.78 | -1.69 |
| | Libertarianz | Peter Osborne | Peter Osborne | 89 | 0.24 | | 21 | 0.06 | +0.01 |
| | NZ First | | | | | | 940 | 2.54 | -3.34 |
| | Progressive | | | | | | 195 | 0.53 | -0.28 |
| | Family Party | | | | | | 182 | 0.49 | |
| | Māori Party | | | | | | 182 | 0.49 | +0.08 |
| | Bill and Ben | | | | | | 170 | 0.46 | |
| | Legalise Cannabis | | | | | | 131 | 0.35 | +0.16 |
| | Kiwi | | | | | | 105 | 0.28 | |
| | Pacific | | | | | | 45 | 0.12 | |
| | Alliance | | | | | | 19 | 0.05 | +0.02 |
| | Workers Party | | | | | | 9 | 0.02 | |
| | Democrats | | | | | | 8 | 0.02 | ±0.00 |
| | RAM | | | | | | 8 | 0.02 | |
| | RONZ | | | | | | 4 | 0.01 | ±0.00 |
| Informal votes | Informal votes | Informal votes | Informal votes | 251 | | | 110 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 36,370 | | | 36,988 | | |
| Turnout | Turnout | Turnout | Turnout | 37,298 | 82.27 | -0.58 | | | |
| | National hold | National hold | Majority | 20,547 | 56.49 | | | | |

### 2005 election

2005 general election: Helensville :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | National | Y John Key | Y John Key | 22,008 | 64.10 | +29.92 | 19,224 | 55.09 | +29.28 |
| | Labour | Judy Lawley | Judy Lawley | 9,230 | 26.88 | -0.24 | 9,761 | 27.97 | -2.86 |
| | NZ First | Dail Jones | Dail Jones | 1,400 | 4.08 | -5.45 | 2,051 | 5.88 | -6.06 |
| | United Future | Andrea Deeth | Andrea Deeth | 573 | 1.67 | -2.47 | 863 | 2.47 | -5.82 |
| | ACT | Stephen Langford-Tebby | Stephen Langford-Tebby | 389 | 1.13 | | 821 | 2.35 | -10.26 |
| | Māori Party | Awa Hudson | Awa Hudson | 359 | 1.05 | | 142 | 0.41 | |
| | Progressive | Julian Aaron | Julian Aaron | 318 | 0.93 | -0.02 | 218 | 0.81 | -0.08 |
| | Direct Democracy | Helen Koster | Helen Koster | 58 | 0.17 | | 11 | 0.03 | |
| | Green | | | | | | 1,407 | 4.03 | -1.99 |
| | Destiny | | | | | | 151 | 0.43 | |
| | Legalise Cannabis | | | | | | 66 | 0.19 | -0.21 |
| | Christian Heritage | | | | | | 48 | 0.14 | -0.85 |
| | Libertarianz | | | | | | 16 | 0.05 | |
| | Alliance | | | | | | 9 | 0.03 | -1.00 |
| | Democrats | | | | | | 8 | 0.02 | |
| | Family Rights | | | | | | 8 | 0.02 | |
| | 99 MP | | | | | | 5 | 0.01 | |
| | RONZ | | | | | | 5 | 0.01 | |
| | One NZ | | | | | | 4 | 0.01 | -0.04 |
| Informal votes | Informal votes | Informal votes | Informal votes | 253 | | | 110 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 34,335 | | | 34,896 | | |
| Turnout | Turnout | Turnout | Turnout | 35,222 | 82.85 | +3.21 | | | |
| | National hold | National hold | Majority | 12,778 | 37.22 | +31.26 | | | |

### 2002 election

2002 general election: Helensville :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | National | John Key | John Key | 9,775 | 34.18 | | 7,524 | 25.81 | |
| | Labour | Gary Russell | Gary Russell | 8,070 | 28.21 | | 8,988 | 30.83 | |
| | Independent | Brian Neeson | Brian Neeson | 5,644 | 19.73 | | | | |
| | NZ First | Dail Jones | Dail Jones | 2,725 | 9.53 | | 3,481 | 11.94 | |
| | United Future | Andrea Deeth | Andrea Deeth | 1,184 | 4.14 | | 2,416 | 8.29 | |
| | Alliance | Helen MacKinlay | Helen MacKinlay | 581 | 2.03 | | 299 | 1.03 | |
| | Christian Heritage | David Simpkin | David Simpkin | 350 | 1.22 | | 288 | 0.99 | |
| | Progressive | Clare Dickson | Clare Dickson | 273 | 0.95 | | 272 | 0.93 | |
| | ACT | | | | | | 3,676 | 12.61 | |
| | Green | | | | | | 1,755 | 6.02 | |
| | ORNZ | | | | | | 313 | 1.07 | |
| | Legalise Cannabis | | | | | | 118 | 0.40 | |
| | One NZ | | | | | | 15 | 0.05 | |
| | Mana Māori | | | | | | 10 | 0.03 | |
| | NMP | | | | | | 2 | 0.01 | |
| Informal votes | Informal votes | Informal votes | Informal votes | 327 | | | 78 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 28,602 | | | 29,157 | | |
| Turnout | Turnout | Turnout | Turnout | 29,428 | 79.64 | | | | |
| | National win new seat | National win new seat | Majority | 1,705 | 5.96 | | | | |

### 1981 election

1981 general election: Helensville :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Dail Jones | 8,242 | 35.85 | −4.58 |
| | Labour | Jack Elder | 8,026 | 34.91 | +0.71 |
| | Social Credit | David Howes | 6,718 | 29.22 | |
| Majority | Majority | Majority | 216 | 0.93 | −5.29 |
| Turnout | Turnout | Turnout | 22,986 | 89.05 | +19.21 |
| Registered electors | Registered electors | Registered electors | 25,812 | | |

### 1978 election

1978 general election: Helensville :
| Party | Party | Candidate | Votes | % |
| | National | Dail Jones | 7,783 | 40.43 |
| | Labour | Jack Elder | 6,584 | 34.20 |
| | Social Credit | Chris Lynch | 4,510 | 23.43 |
| | Values | Dennis Worley | 370 | 1.92 |
| Majority | Majority | Majority | 1,199 | 6.22 |
| Turnout | Turnout | Turnout | 19,247 | 69.84 |
| Registered electors | Registered electors | Registered electors | 27,558 | |

## Table footnotes

* ↑ 2014 Internet Mana swing is relative to the votes for Mana in 2011; it shared a party list with Internet in the 2014 election.