// Towards Data Science · 1 May 2026

Churn Without Fragmentation: How a Party-Label Bug Reversed My Headline Finding

A data quality case study from English local elections on categorical normalisation, metric validation, and why raw labels should never define analytical groups. The post Churn Without Fragmentation: How a Party-Label Bug Reversed My Headline Finding appeared first on Towards Data Science.

Towards Data Science

@towards-data-science · Obinna Iheanachor

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Towards Data Science@towards-data-science