At present, the Senedd has 60 Members (MSs). Forty represent constituencies that mirror Westminster’s boundaries, while twenty represent five regions. Each voter is represented by one constituency MS and four regional MSs. This system, like Scotland’s, blends first-past-the-post with proportional representation.

However, major electoral reforms will transform Wales’s political geography from the 2026 Senedd election. Membership will increase to 96 MSs, elected from 16 larger constituencies. Each will elect six representatives using a closed-list proportional system. This marks the end of the current 40+20 arrangement, creating a more proportional electoral geography in Wales.

Explore Senedd Boundaries on a map