On 3 February 1983, a New Zealand Labour Party leadership election was held to determine the leadership of the New Zealand Labour Party. The leadership was won by Mangere MP David Lange, who had been Deputy Leader of the party since 1979.

Michael Kenneth Moore was a New Zealand politician, union organiser, and author. In the Fourth Labour Government he served in several portfolios including minister of foreign affairs, and was the 34th prime minister of New Zealand for 59 days before the 1990 general election elected a new parliament. Following Labour's defeat in that election, Moore served as Leader of the Opposition until the 1993 election, after which Helen Clark successfully challenged him for the Labour Party leadership.