Er mwyn lleihau’r risg o ansefydlogrwydd, rydym yn cynnig, lle mae trefniadau gweithrediaeth prif gyngor wedi newid, na ellir gwneud unrhyw newidiadau pellach iddynt nes bydd dau gylch etholiadol llawn wedi pasio. Mae hyn yn unol â’r darpariaethau a nodir ym Mil Llywodraeth Leol ac Etholiadau (Cymru) i brif gynghorau newid eu systemau pleidleisio.
In order to minimise the risk of instability, we propose that where the executive arrangements of a principal council have been changed, no further changes can be made to them until two complete electoral cycles have passed. This is in line with provisions set out in the Local Government and Elections (Wales) Bill for principal councils to change their voting systems.