Resolve the plurality position of a group-breakdown row.
Ties are broken alphabetically (ABSTAIN < AGAINST < FOR) so the result is deterministic and fixture-stable.
DOCEO group-breakdown counts. undefined for groups absent from the vote.
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Plurality position or null when the row is missing or all zero.
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Resolve the plurality position of a group-breakdown row.
Ties are broken alphabetically (ABSTAIN < AGAINST < FOR) so the result is deterministic and fixture-stable.