Combined Authority and Combined County Authority Returning Officer guidance for Combined Authority Mayoral elections

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Data collection and feedback

At scheduled elections, you will be asked to send information and data to us relating to the elections.

All information needed to return data to Electoral Commission Post Election

Data specification May 2025 Elections (XLSX)
User guide for Post poll data collection May 2025 (DOCX)
Sheet for LA to add up VIDEF data

Link to data portal

Diweddarwyd ddiwethaf: 7 Ebrill 2025