← Prism · answered 28 October 2026
Does centre-right split voting make any sense?
What the record says
Under MMP every voter has two votes, and splitting them is legal — it has happened since the first MMP election in 1996, most famously in Epsom, where National signalled supporters should give ACT the electorate. In 2026 the idea has flipped: with polling suggesting National will win around 37 electorates — more than its party vote entitles it to — right-aligned figures including Don Brash, commentators Ashley Church and Ani O'Brien, and donor Harry Mowbray's 'split your vote' website urged centre-right voters to give electorate votes to National and party votes to ACT or NZ First, engineering an 'overhang' of extra seats.
National's leadership rejects this: Sir John Key called it 'the opposite of clever' at the campaign launch, Luxon labelled it an 'insanely stupid idea', and at the 20 October Stuff debate both Luxon and Hipkins said engineering an overhang was cheating. David Seymour countered that 'both votes belong to the voter'; Winston Peters called National's warnings ill-informed. Newsroom (23 Oct) calculated the right would need only a 3-seat overhang to govern without TOP, versus 13 for the left. Te Pāti Māori launched a mirror strategy on the left at its Gisborne campaign launch. Latest poll (21–25 Oct Verian): NAT 28.9, ACT 12.4, NZF 10; this site's forecast gives the right a 34% chance of winning outright.
From the left
Labour and most left-leaning commentators argue the scheme only 'makes sense' if winning matters more than the system's integrity. New Zealanders chose MMP in 1993 precisely so Parliament mirrors the nationwide party vote; deliberately manufacturing an overhang severs that link, could hand government to the bloc with fewer votes, and swells Parliament beyond 120 seats at public expense. Chris Hipkins called it cheating at the Stuff debate — and notably, Christopher Luxon agreed. The Democracy Project has warned that politicians must act on the overhang campaign, because once donors like the Mowbrays run coordinated vote-shuffling websites, elections become an arithmetic game managed by strategists rather than an expression of citizens' actual preferences. The left also distinguishes Te Pāti Māori's position: overhang in the Māori electorates flows from voters choosing genuine local representation in seats grounded in te Tiriti, whereas the Brash strategy is pure seat-manufacturing by people who mostly opposed MMP. If the right can only govern by gaming the count, that is an argument for closing the loophole — not exploiting it.
From the right
Advocates like Don Brash, David Seymour and Winston Peters argue the logic is simply MMP working as written. Seymour's point: 'both votes belong to the voter', and they do different jobs. Governments are formed by blocs, not single parties — a seat for ACT or NZ First keeps Labour out just as surely as one for National. If National wins roughly 37 electorates, more than its party-vote share entitles it to, then on Brash's reasoning a National party vote elects nobody: it is 'dead' where it sits but alive anywhere else on the centre-right. Newsroom's maths shows just three overhang seats could let the coalition govern without depending on TOP. Advocates note National itself pioneered tactical signalling in Epsom — Key's 2011 'cup of tea' — so objecting now is selective. Even Key's warning that talented National ministers would lose list seats is, for these voters, a trade worth making: the goal is a centre-right government, not protecting any one party's caucus. Everything proposed is legal, transparent, and uses the two votes exactly as the Electoral Act provides.
The disagreement turns on what a vote is for: if MMP's legitimacy rests on Parliament proportionally mirroring the party vote, deliberately engineering an overhang betrays the system even while obeying its rules; if votes are sovereign tools voters may deploy however the law allows, then refusing a free, legal seat for your bloc is the only real waste.
Sources: RNZ — Risks and rewards of strategic voting · RNZ — ACT, NZ First hit back at National's warning · interest.co.nz — The parliamentary overhang explained · Newsroom — Why the left overhang is overhyped but the right could change the election · Stuff — Luxon and Hipkins leaders' debate (overhang 'cheating') · Democracy Project — How both sides could game MMP · NZ Initiative — Unravelling MMP research note · NZ Herald — MMP showing its true self as parties accept strategic voting
Prism is an AI research pass over published reporting and this site's live forecast. The two cases are each side's best argument, not the site's view — and the order (left first) is layout, not a ranking. Check the sources before leaning on anything.