The Mount Albert electorate includes the communities of Point Chevalier, Owairaka, Mount Albert, part of Sandringham, Kingsland, and is home to Eden Park. As a result of boundary changes in 2014, the electorate gained the suburbs of Grey Lynn and Westmere, but lost Waterview and the areas alongside Rosebank Road to the Kelston electorate. Mount Albert was held between 1981 and 2009 by Helen Clark, ending with her retirement from parliament. Although just 23.0% of the Mount Albert electorate is over 50, the share of those aged 30–49 is the highest in New Zealand. The largest sector of those working is in the professions, science and technical industries ; a further 5.4% work in the media and communications sectors, the largest share of any general electorate. Compared to the rest of New Zealand in 2013, Mount Albert had low levels of those who were married, owned their own home, and who declared a Christian religious affiliation. The winning candidate in the 2014 election, David Shearer, captured a majority of the 35,716 valid electorate votes cast for candidates in the Mount Albert electorate. The National Party captured a plurality of the party votes in Mount Albert, up 2.4 percentage points on its party vote share in 2011. The Labour Party captured 29.4% of the party votes, while the Green Party was third with 21.8% of the party votes. No other party gained more than 5% of the party votes. Turnout in 2014 was 80.4%.
Nominations for the by-election closed on 1 February 2017 with thirteen candidates nominated. The New Zealand National Party announced it would not stand a candidate in the by-election. The Prime Minister, Bill English, cited that approach for multiple reasons; Mount Albert was a safe seat for Labour and that Jacinda Ardern, who is highly likely to get Labour's nomination, would be "pretty difficult to beat". Other than The Opportunities Party, no right or center parties stood, with ACT New Zealand, United Future, and New Zealand First all avoiding the by-election.
Voting
Voting from overseas started on 8 February. Advance voting started on 13 February 2017. Overall voter turnout was low, with only 27.6% of enrolled voters in Mount Albert voting in the by-election. The figure was then officially recorded at 30% by the Electoral Commission, after counting of special votes. This compares to a much higher turnout of 80.4% in the electorate for the 2014 general election.
Results
Labour list MP Jacinda Ardern won the electorate and kept the seat for the Labour Party. As Ardern moved from a list seat to an electorate seat, the Labour Party replaced her list seat with another person from their party list. Labour party leader, Andrew Little, announced this would be Raymond Huo. Huo was the third-highest unelected person on Labour's party list, but both Maryan Street and Moana Mackey announced they would decline the chance to return to Parliament.
