One vote

Jo Whitmore has one electorate vote in Whanganui, and the seat is dead level. Choose for her, and watch what her ballot does — not to the seat, but to the statute book. Every number below is computed by the same Sainte-Laguë engine that reproduces the official 2023 result. Nothing is staged.

Whanganui 14,203 — 14,203 level, with one vote uncast
Three years I’ve wantedsolar panels on that roof.WHANGANUI — ELECTORATE VOTEAWATERE, PitaSunrise PartyBRIGHT, SusanHarbour PartyBALLOT BOXJo Whitmore · runs a tyre shop on Victoria AvenueShe votes for the party that keeps talking about rooftops.Whanganui — the electorate count14,203Harbour14,203SunriseThe 5% threshold4.3%5% — the thresholdSunrise, party voteshort by 20,300WASTEDSainte-Laguë — 120 seats, highest quotient firstHarbour0Union0Meadow0Liberty0Sunrise0The House it produces0 of 120 seatsSixty-one0Green blocUnion + Meadow + Sunrise0Blue blocHarbour + Liberty61 to governThe lawA BILL…

Jo Whitmore, 41, runs a tyre shop on Victoria Avenue in Whanganui. She has wanted solar panels on the roof for three years.

Every enrolled elector gets two votes: one for a party, one for a local MP.

The two worlds, side by side

Same election. Same 2,900,000 party votes, cast identically. The only difference between these two Parliaments is which box one woman in Whanganui ticked.

She votes SunriseShe votes Harbour
Harbour Party4750
Union Party4548
Meadow Party1111
Liberty Party1111
Sunrise Party60
GovernsGreen bloc, 62Blue bloc, 61
Law that followsThe Rooftop Solar RebateThe Northern Motorway Extension

12 MPs sit in a different chair because of one ballot.

Is this a trick?

It is a special case, and it would be dishonest to pretend otherwise. Almost every vote in almost every election changes nothing at all, and no amount of animation makes that untrue. What is worth knowing is where the exceptions live, because they are not where people look for them.

The threshold is the one-vote lever. It is a cliff: 4.9% is worth nothing and 5.0% is worth six seats. And s 191(4) puts a door in the cliff — one electorate seat lets you in anyway. Electorate seats are won by handfuls of votes, and under s 179 a tied electorate is settled by drawing lots. So the chain you just watched — one ballot, six seats, a different government, a different law — is not a stunt. It is the system working exactly as written.

The last seat is close, but it is not one vote — and we would rather give you the real number than the better story. In the actual 2023 election the final Sainte-Laguë seat was 15,971 party votes from changing hands: ACT New Zealand was that far from taking it off the Green Party. That is 0.56% of the party vote — about one voter in 179. Serious leverage for an organised bloc. Not a single ballot.

Neither lever is visible from inside the polling booth, which is the whole argument for building things like this.

The parties in the story are invented. The electorates, the map, the 5% threshold, the electorate lifeboat and the Sainte-Laguë count are real, and every seat number comes from the same engine that reproduces the official 2023 result exactly — including the 15,971 above, which is computed from the official party votes, not quoted from anywhere. Putting hypothetical policies in the mouths of real parties would have cost us our neutrality and bought nothing.