The purpose of the survey is to understand the characteristics of the candidates, and those who are elected as councillors; and to understand how the profile of this group changes over time.
Pwrpas yr arolwg yw deall nodweddion yr ymgeiswyr, a’r rheini sy’n cael eu hethol yn gynghorwyr; a deall sut mae proffil y grŵp hwn yn newid dros amser.