A
Senedd constituency comprising the boundaries of the
UK Parliament constituencies of
Aberafan Maesteg and
Rhondda and Ogmore, has been proposed by the
Democracy and Boundary Commission Cymru for the
2026 election to the
Senedd (Welsh Parliament; ). It was initially proposed using the name
Aberafan Maesteg, Rhondda and Ogmore in September 2024, The
Welsh-only name and boundaries were confirmed in the commission's final recommendations in March 2025. When announcing their candidates,
Reform UK used "Aberafan Maesteg, Rhondda and Ogmore" instead, using the names for the pair of UK Parliament constituencies that form it. It encompasses parts of the
principal areas (counties/county boroughs) of
Bridgend County Borough,
Neath Port Talbot and
Rhondda Cynon Taf in
South Wales. The constituency is to be established by 2026, following the passing of the
Senedd Cymru (Members and Elections) Act 2024. The act legislates electoral reform of the Senedd to create 16 larger "super constituencies", pairing the 32
UK Parliament constituencies in Wales, and using a new fully proportional voting system, with each constituency electing six
Members of the Senedd (MSs) rather than one previously. == Elections ==