A survey of a representative sample of 1,002 adults across Wales was carried out in November 2020 using the Wales Omnibus survey.
Cynhaliwyd arolwg o sampl gynrychioladol o 1,002 o oedolion ar hyd a lled Cymru ym mis Tachwedd 2020 gan ddefnyddio arolwg Omnibws Cymru.