PARLIAMENT

Use when

• seats, slots, berths: integer allocations where each unit matters
• majority questions: who crosses the middle line

Do not use when

• non-integer measures
• totals above ~200 (dots become texture)

See instead

• values are not countable seats: CH-PTW-01
• a share of 100: CH-PTW-06

Alternatives

• CH-PTW-01 (shares without the seat metaphor)
• CH-PTW-06 (percent of 100)

Rules

• deterministic layout: rows by capacity, seats filled left to right by angle
• groups contiguous, colored by the monochrome primary ramp
• the total printed in the hemicycle center

Never do this

• rainbow party palettes
• non-integer seat counts
• using it for shares that are not allocations

QA before delivering

• seats integer and contiguous
• total printed
• <= 6 groups
• source present

Data shape

{
  "title": "Two contractors hold 74 of 120 berths",
  "eyebrow": "BERTH ALLOCATION",
  "source": "Source: sample dataset v1, 2026-07-12",
  "unit": "berths",
  "parties": [
    {
      "name": "Contractor A",
      "seats": 42
    },
    {
      "name": "Contractor B",
      "seats": 32
    },
    {
      "name": "Contractor C",
      "seats": 22
    },
    {
      "name": "Shared pool",
      "seats": 14
    },
    {
      "name": "Reserved",
      "seats": 10
    }
  ]
}