Changes to Senedd constituency boundaries from 2026

View constituency boundary changes:
2026 constituencies 2021 constituencies

Map of Wales showing the boundaries of the 16 Senedd constituencies from the May 2026 election. The 16 Senedd constituencies are formed by combining two contiguous UK Parliamentary constituencies. Each constituency will be represented by 6 members bringing the total number of Senedd members to 96.

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Source: Institute for Government analysis of Democracy and Boundary Commission Cymru.Notes: 16 Senedd constituencies are formed by combining two contiguous UK Parliamentary constituencies. Each constituency will be represented by 6 members bringing the total number of Senedd members to 96.Get the dataEmbed Download image