How New Zealand elects its Parliament

MMP sandbox on the official 2023 results — drag votes, flip electorates, and watch the 5% threshold, the electorate lifeboat, overhang, and the Sainte-Laguë count do their work.

Party vote

Up for grabs
0.0%
NAT
38.1% · 49
LAB
26.9% · 34
GRN
11.6% · 15
ACT
8.6% · 11
NZF
6.1% · 8
TPM
3.1% · 6
TOP
2.2% · 0
NZL
1.2% · 0

Shrink a party and its votes go up for grabs. Dashed line: 5% threshold. Right: vote share · seats.

Parliament

31217176844529123seats · 62 for a majority
won an electorate entered from the party list +2 overhang

The race for the last seat

Seats go to the 120 highest quotients (votes ÷ 1, 3, 5, …). The boundary between the last seat won and the first missed is where small vote shifts change Parliament.

Just missed out

  • NAT 11,194
  • LAB 11,124
  • ACT 10,716
  • GRN 10,674
  • NZF 10,209

Last seats won

  • #120 GRN 11,411
  • #119 NAT 11,430
  • #118 LAB 11,456
  • #117 NZF 11,570
  • #116 NAT 11,676
  • #115 ACT 11,737
Full allocation, seat by seat

Each seat goes to the party with the highest quotient: its party votes divided by 1, 3, 5, … — one step further along the divisors for each seat it already holds.

Parties

NAT 5% ✓
%
1,085,851 party votes
44E 5L = 49
List MPs in / next
  1. Nicola Willis
  2. Paul Goldsmith
  3. Melissa Lee
  4. Gerry Brownlee
  5. Nancy Lu
LAB 5% ✓
%
767,540 party votes
17E 17L = 34
List MPs in / next
  1. Kelvin Davis
  2. Grant Robertson
  3. Jan Tinetti
  4. Ayesha Verrall
  5. Willie Jackson
  6. Willow-Jean Prime
  7. Damien O'Connor
  8. Adrian Rurawhe
  9. Andrew Little
  10. David Parker
  11. Peeni Henare
  12. Priyanca Radhakrishnan
  13. Kieran McAnulty
  14. Ginny Andersen
  15. Jo Luxton
  16. Rino Tirikatene
  17. Deborah Russell
GRN 5% ✓
%
330,907 party votes
3E 12L = 15
List MPs in / next
  1. Marama Davidson
  2. James Shaw
  3. Teanau Tuiono
  4. Lan Pham
  5. Golriz Ghahraman
  6. Ricardo Menéndez March
  7. Steve Abel
  8. Hūhana Lyndon
  9. Efeso Collins
  10. Scott Willis
  11. Darleen Tana
  12. Kahurangi Carter
ACT 5% ✓
%
246,473 party votes
2E 9L = 11
List MPs in / next
  1. Nicole McKee
  2. Todd Stephenson
  3. Andrew Hoggard
  4. Karen Chhour
  5. Mark Cameron
  6. Simon Court
  7. Parmjeet Parmar
  8. Laura Trask
  9. Cameron Luxton
NZF 5% ✓
%
173,553 party votes
0E 8L = 8
List MPs in / next
  1. Winston Peters
  2. Shane Jones
  3. Casey Costello
  4. Mark Patterson
  5. Jenny Marcroft
  6. Jamie Arbuckle
  7. Andy Foster
  8. Tanya Unkovich
TPM lifeboat overhang +2
%
87,844 party votes
6E 0L = 6
List MPs in / next
TOP out
%
63,344 party votes
0E 0L = 0
NZL out
%
34,478 party votes
0E 0L = 0

Electorates — click to flip the winner

NAT 44LAB 17TPM 6GRN 3ACT 2

Māori electorates

Data: Electoral Commission official 2023 results. Rules: Electoral Act 1993 ss 191–193 — see docs/mmp-rules.md. Ties on the last quotient are resolved by lot in law; this model breaks them deterministically.