A survey was conducted in November 2020 among a sample of 1,002 adults aged 16 and over representative of the Welsh population, using the Beaufort Wales Omnibus.
Cynhaliwyd arolwg ym mis Tachwedd 2020 ymysg sampl o 1,002 o oedolion 16 oed a hŷn oedd yn cynrychioli poblogaeth Cymru, gan ddefnyddio Omnibws Cymru Beaufort.