Currently, the Member for Northcote is Dan Bidois of the National Party, who won the seat at the 2023 election.

In addition to the eponymous Northcote, there are Birkenhead, Birkdale, Beach Haven and the southern end of Glenfield.

It was created ahead of the change to mixed-member proportional (MMP) voting in 1996 by merging the seat of Birkenhead with most of the old Glenfield electorate.

Glenfield also followed this boom and bust model, being held by Labour Party MP Judy Keall through the duration of the fourth Labour government before the National Party landslide in 1990 claimed Keall as one of its victims.

The first member for Northcote was Ian Revell from the National Party, who would rise to become the Deputy Speaker.

Revell was caught up in a scandal for misuse of official letterhead and was defeated by Labour's Ann Hartley in 1999 New Zealand general election.

Hartley herself was ousted by the seat's former representative, Jonathan Coleman, when National consolidated the centre-right vote in 2005.

On 22 March 2018, Coleman announced he would resign within weeks, triggering the 2018 Northcote by-election.

Yellow background denotes an electorate win by a list member, or other incumbent.

Yellow background denotes an electorate win by a list member, or other incumbent.

Pink background denotes a candidate elected from their party list prior to the by-election.

Yellow background denotes an electorate win by a list member, or other incumbent.