New Zealand's prime minister does not want to change the voting rules. His coalition partner does

NEW ZEALAND'S prime minister, Christopher Luxon, has not announced support for a referendum on the country's voting system. Nor, apparently, has anyone in his own party. The person who wants to put electoral reform to a popular vote is Winston Peters, leader of the populist New Zealand First party, which sits in Mr Luxon's coalition government. The confusion between the two men's positions reveals a structural truth about proportional democracy: minority parties that hold the balance of power will always have an incentive to change the rules, even when doing so undermines the system that empowers them.

New Zealand uses a mixed-member proportional, or MMP, voting system. Voters cast two ballots, one for a political party and one for a local candidate. Seats in the 120-member parliament are then allocated in proportion to the party vote, provided a party crosses a 5% threshold (or wins an electorate seat). The system was introduced in 1996 after a binding referendum in which 85% of voters chose to abandon first-past-the-post voting and 70% of those backed MMP. It was designed to make the legislature more representative. That it does so at the cost of stable majorities is not a bug but a feature. Since its introduction, only one party - Labour, in 2020 - has won an outright majority.

The consequence is that coalition governments are the default. After the 2023 election, Mr Luxon's National Party won 48 seats with 38% of the vote. It needed 13 more to govern. New Zealand First, with 8 seats and 6% of the vote, and ACT, a pro-business minor party with 11 seats and 8.6%, supplied the rest. Together the three have 67 of the 61 needed. Mr Peters's party, which once had 17 seats and commanded the kingmaker position outright, now holds a fraction of its former power. It has not, however, lost the habit of thinking in terms of leverage.

In February Mr Peters introduced a Member's Bill calling for a binding referendum on the future of the seven Māori seats in parliament, to be held alongside the general election on November 7th. The question would be binary: should there be separate Māori seats? Mr Peters argues that Māori are now "massively over-represented" and that the original justification for the seats - under-representation under a majoritarian system - no longer applies. He also complains about the conduct of Te Pāti Māori, the indigenous-rights party, whose MPs have at times boycotted parliament. "If you want a dramatic, unified electoral system, vote for it," he said.

Mr Luxon's response was characteristically evasive. A referendum on Māori seats, he said, was not something his party had discussed. "What we're really focused on is fixing the basics and building the future." His deputy, Nicola Willis, was marginally less reticent: the policy would need caucus discussion. ACT went further. Its position is that the Māori seats should be abolished through parliament, not referendum, on the philosophical ground that all people should be equal before the law.

The politics are unsurprising. Mr Peters's announcement came after years of campaigning on the issue and follows a 2017 attempt that went nowhere. His party is polling at single digits; the referendum is a campaign issue, not a legislative priority. Te Pāti Māori called it "race baiting". Labour dismissed it as "cheap and cynical". Both are right, but the diagnosis misses the mechanism. Mr Peters is not merely opportunistic. He is responding to an incentive structure that MMP itself creates.

Proportional representation magnifies the influence of small parties. It also makes the rules of the game visible to everyone who plays it. When a party is small enough that the only way it matters is by deciding which major party forms government, it has every reason to protect the system. When a party is small enough that even kingmaking feels like an insult, it may start looking for a system where size translates into something more tangible. That is where Mr Peters's logic, however self-serving, becomes interesting. The referendum is not really about Māori seats. It is a Trojan horse for a broader conversation about electoral reform - one that could, in time, lead back to MMP itself.

New Zealand has not been idle on that front. Polling ahead of the November election suggests the country is headed for one of its closest contests in modern history. The left bloc - Labour, the Greens and Te Pāti Māori - has been trading blows with the coalition in recent months, occasionally ahead. Dr Claire Robinson, a political scientist, has noted that Labour has averaged 2% more support than National across the last 15 polls. Under MMP, a few percentage points can decide which bloc governs and which languishes in opposition. The cost of living, which consistently ranks as the top voter concern, will do much of the work. But the minor parties will determine the arithmetic.

MMP has produced governments that are more representative but also more fragile. Since the coalition took office, New Zealand's economy has contracted in three of the last six quarters to September. Unemployment rose to 5.3% in November, the highest in nearly two decades. Mr Luxon has pointed to inflation falling from 7% to 3% and to 38,000 fewer self-reported victims of crime as evidence of progress. Those are real claims, but they compete with a broader sense of economic disquiet. The coalition's reforms - to public services, environmental regulations, mining and policies affecting Māori - have provoked large protests, alarm from scientists, and one of the highest submission counts on a bill in the country's history.

That is where the system begins to creak. Proportional representation forces compromise, which in turn blunts accountability. Voters can be reasonably sure that their preferences are reflected in parliament and equally sure that no one in government can be held fully responsible for what happens next. A prime minister who cannot govern alone is a prime minister whose failures can be outsourced. The result is a politics of negotiation rather than conviction, which may explain why Mr Luxon, for all his promises of decisive leadership, has consistently trailed Chris Hipkins, the leader of Labour, in preferred-prime-minister polls.

To be sure, the alternative is not without its own defects. A return to first-past-the-post would produce clearer majorities and fewer minor parties. It would also produce more exclusionary politics, with large minorities finding themselves unrepresented for long stretches. New Zealand's experience with MMP's first years - instability, awkward power-sharing, public disaffection - shows that no system is frictionless. The 2011 referendum, in which voters chose to keep MMP, was won by a narrow margin, 57% to 43%, and turnout was low. The system's survival has been more a function of the absence of a credible alternative than of popular enthusiasm.

The deeper problem is that Mr Peters's referendum campaign, however cynical, touches a genuine tension. The Māori seats were introduced under a majoritarian system to correct chronic under-representation. Under MMP, with its overall commitment to proportionality, the rationale for separate electorates is indeed less clear. The question is not whether Māori should have representation in parliament - they plainly should - but whether a separate electorate system, inherited from a bygone era, remains the right instrument to deliver it. That is a question worth debating. What is less clear is whether a binding referendum, launched by a populist who previously ran for a Māori seat himself, is the most constructive way to have it.

The better answer would be to let the parliament, not the plebiscite, do the work. If the coalition or its successor wishes to reform the Māori seats, it should do so through legislation, with debate, with evidence, and with regard for the obligations created by Te Tiriti o Waitangi, the founding treaty between Māori and the Crown. A referendum collapses a complex institutional question into a binary choice. It is also a gift to the most untrustworthy actor in the room.

Mr Luxon's instinct to stay away from the issue is politically rational. But it is not intellectually honest. He benefits from a system that allows his party to govern despite winning only 38% of the vote. He should not be surprised when his coalition partners, who benefit from the same arrangement in a different way, start thinking about what they could get from changing it. The danger is not that MMP will be abolished this time around. It is that every election cycle will revive the argument, eating into the governing bandwidth and keeping New Zealand trapped in a conversation about how to vote rather than what to vote for. That bargain is breaking.