Why was Labour’s 2020 victory historically important under New Zealand’s proportional representation system?

Labour’s 2020 election victory was historically significant because it marked the first time since the introduction of proportional representation in 1993 that a single party was able to secure enough votes to form a majority government without the need for a coalition partner.1

Under New Zealand's mixed member proportional (MMP) system, which was adopted in 1996, parliamentary seats are allocated based on the percentage of the party vote a group receives. This structure typically necessitates that governments be formed through coalitions between major parties and smaller political partners. However, in the 2020 election, the Labour Party captured approximately 49 percent of the vote—its strongest electoral performance in 50 years—allowing it to govern independently.2314