Act 2013 (“the 2013 Act”) requires the Democracy and Boundary Commission Cymru (“the Commission”) to review the electoral arrangements for each principal area in Wales at least once every 12 years.
Mae gan Weinidogion ddyletswydd o dan Ddeddf Democratiaeth Leol (Cymru) 2013 i sicrhau llywodraeth leol 'effeithiol a chyfleus' ledled Cymru.