Women's suffrage in New Zealand was an important political issue in the late nineteenth century. In early colonial New Zealand, as in other European societies, women were excluded from any involvement in politics. Public opinion began to change in the latter half of the nineteenth century, however, and after years of effort by suffrage campaigners, led by Kate Sheppard, New Zealand became the first self-governing colony in the world in which all women had the right to vote in parliamentary elections.
The Electoral Bill granting women the franchise was given Royal Assent by Governor Lord Glasgow on 19 September 1893. Women voted for the first time in the election held on 28 November 1893 (elections for the Māori electorates were held on 20 December). In 1893, Elizabeth Yates also became Mayor of Onehunga, the first time such a post had been held by a woman anywhere in the British Empire.
Women's suffrage was granted after about two decades of campaigning throughout New Zealand, by women who included Kate Sheppard and Mary Ann Müller. The New Zealand branch of the Women's Christian Temperance Union led by Anne Ward was particularly instrumental in the campaign. Influenced by the American branch of the Women's Christian Temperance Movement and the philosophy of thinkers like Harriet Taylor Mill and John Stuart Mill, the movement argued that women could bring morality into democratic politics. Opponents argued instead that politics was outside women's 'natural sphere' of the home and family. Suffrage advocates countered that allowing women to vote would encourage policies which protected and nurtured families.