FA-12777 / Voting rule computation / Member archive

A tied rank consumes only one scoring position · case 02

A tied rank consumes only one scoring position.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

Groups partition all m candidates in rank order. Award each member the exact mean of Borda scores m-1-i for occupied positions, returned as strings in candidate order.

Why this case matters

A deterministic toy ballot model makes the stated counting convention executable.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
top tie consumes positions	`["2", "2", "1"]`	`["3/2", "3/2", "0"]`	Failed

MEMBER ARCHIVE

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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