The New Zealand Labour Party (Rōpū Reipa o Aotearoa), or simply Labour (Reipa), is a centre-left political party in New Zealand. The party's platform programme describes its founding principle as democratic socialism, while observers describe Labour as social-democratic and pragmatic in practice. The party participates in the international Progressive Alliance. It is one of two major political parties in New Zealand, alongside its traditional rival, the National Party.
The New Zealand Labour Party formed in 1916 out of various socialist parties and trade unions. It is the country's oldest political party still in existence. Alongside the National Party, Labour has alternated in leading governments of New Zealand since the 1930s. , there have been six periods of Labour government under 11 Labour prime ministers. The party has traditionally been supported by working cl