Women won the right to vote in 1893 and the right to stand for Parliament in 1919. But it was not until 1933 that a woman was elected.
The first woman MP was Elizabeth McCombs who won the seat of Lyttelton for Labour at a byelection after the death of her husband James, the previous MP.
At first the Labour Party was reluctant to endorse her because James had a slender majority of just 32 votes.
One of her opponents argued that, despite four decades of women's political rights, the difficulties of the country were too great for them to grapple with.