Part III — The Electoral System

Derived from §0.5 (a trustworthy mandate is the precondition of the whole model), and Criteria 1 (legitimacy), 7 (representation), 5 (capture-resistance). This is the foundation reform: experts executing a distorted mandate merely deliver the wrong thing competently, so the mandate must be formed honestly.

This is where BIG's founding work — the analysis of First Past the Post and the STV+ proposal — is incorporated and brought to a 10/10 standard.

III.1 Why First Past the Post fails (the diagnosis)

FPTP is the clearest example of an inherited, undesigned flaw (§0.1). It fails on seven measurable counts:

Comparators prove it is fixable: Ireland (STV) Gallagher ≈ 3.1; Germany (MMP) ≈ 1.8; New Zealand's switch from FPTP to MMP cut its index from ~12 to 1.8–4.

III.2 What the electoral system must achieve (derived requirements)

From the foundations, the system must be:

1. Proportional — seat share tracks vote share (Criterion 7).
2. Locally accountable — a real link between representatives and places (Axiom 12, subsidiarity).
3. Tactical-resistant — voters can vote their genuine preference (Criterion 1 — honest mandate).
4. Gaming- and gerrymander-resistant (Criterion 5).
5. End-to-end auditable and verifiable (Axiom 7).
6. Inclusive — every eligible citizen can vote, online or offline (Criterion 12).
7. Simple enough to use and to trust (Criterion 11).

III.3 The system: STV+ (Single Transferable Vote, enhanced)

The recommended method is STV+, which best satisfies the requirements above (scoring 81/100 against BIG's electoral-systems matrix, versus 39/100 for FPTP, with MMP the strongest alternative at 76).

Core mechanism:

• Multi-member constituencies of 4–7 seats — large enough for proportionality, small enough to preserve a genuine local link.
• Ranked-preference ballots — voters rank candidates; no vote is wasted on a hopeless first choice.
• Droop quota for election: Q = floor( valid_votes / (seats + 1) ) + 1.
• Surplus transfer — votes above quota transfer at fractional value to next preferences; lowest candidates eliminated and transferred — until all seats are filled.
• No tactical incentive — ranking your true preference first never harms you, which is what makes the resulting mandate honest.

The "+" enhancements (what makes it 10/10, not just STV):

1. Independent Boundary Authority — district lines drawn by an independent body on published, algorithmic, anti-gerrymander criteria (§III.5), never by incumbents.
2. End-to-end verifiable count — round-by-round, machine-readable, publicly published, and cryptographically verifiable (Part VIII), so any citizen can confirm the result. Paper trail always retained (§III.6).
3. Statutory voter education — funded, neutral instruction in how to rank and how to verify (links Part II.6).
4. Mandatory audit sampling — a minimum percentage of ballots independently hand-audited against the electronic count every election (risk-limiting audit).
5. Campaign-finance and integrity rules (§III.7–III.8) that close the money-capture vector.

III.4 Election and lot — the bicameral mandate

A 10/10 design does not rely on a single selection method. STV+ produces the Representative Assembly (elected, accountable, proportional). It is paired with a Citizens' Sortition Chamber (selected by lot, Part II.3 mode C) constituted in Part IX. Each checks the other's weakness:

• Election gives accountability but creates re-election incentives, party discipline, and exposure to campaign money.
• Lot gives independence from those incentives and a statistically representative cross-section, but no electoral mandate.

Used together — elected chamber proposes and governs; sortition chamber scrutinises, can delay, and deliberates on value trade-offs — they form a mandate that is both accountable and incorruptible by campaign incentives. (Full powers and interaction: Part IX.)

III.5 Boundaries and district magnitude

• Drawn by the Independent Boundary Authority, never by political actors.
• Published, algorithmic criteria: equal population per seat (within a tight tolerance), respect for community and geography, compactness, and a gerrymander-detection metric (e.g. efficiency-gap and partisan-symmetry tests) that must pass before any map is adopted.
• The drawing process, data, and code are open and reproducible (Axiom 7) — anyone can re-run it and check.
• District magnitude (4–7 seats) is set to balance proportionality against local linkage; rural/urban variation is allowed within the range on transparent criteria.

III.6 The count, transparency, and verifiability

• Open count, round by round, published in machine-readable form with every transfer shown.
• End-to-end verifiable (E2E-V): each voter can confirm their vote was cast as intended, recorded as cast, and counted as recorded — without being able to prove to anyone else how they voted (receipt-freeness, to defeat coercion and vote-buying). Mechanism in Part VIII.
• Paper record always retained, even where voting is digital, enabling a full manual recount.
• Risk-limiting audits mandatory: an independent statistical hand-audit of paper against the electronic tally, every election.
• Dispute resolution: a defined, fast, transparent process (Court-backed) for challenges, with the paper trail as ground truth.

III.7 Candidate eligibility and integrity

• Eligibility is broad (low barrier to standing — Criterion 7, inclusiveness), with disqualifications limited to clear, Charter-defined integrity grounds.
• Funding transparency: every donation above a low threshold is published in real time to the transparency ledger.
• Donation caps and a ban on foreign and anonymous money (capture-resistance, Criterion 5).
• Spending limits per candidate/party, equalising the contest so money cannot buy outcomes.

III.8 Campaign integrity and information

Balancing free expression (§I.3) against an honest mandate:

• No state censorship of political speech. Integrity is pursued through transparency and provenance, not bans.
• Mandatory provenance for paid political advertising: who paid, how much, and (for synthetic/AI media) clear labelling — enforced as a transparency duty, not a speech ban.
• Independent fact-published rebuttal: the Public Information function (§II.5) publishes evidence-based corrections; it persuades, it does not prohibit.
• Foreign-interference defence: detection and disclosure of foreign-origin influence operations (Part VIII), again by exposure rather than censorship.

III.9 Failure modes and safeguards

Part III ends. The foundation tier (Charter → Citizen → Electoral) is complete: the people are sovereign, rights are inviolable, and the mandate is now formed honestly. Next: Part IV — The Expert Execution Layer, which receives that mandate.