Nodyn:Bocs y nifer a bleidleisiodd mewn etholiad pleidlais atodol

|- style="background-color:#F6F6F6" | colspan="3" style="text-align: right; margin-right: 0.5em" | Y nifer a bleidleisiodd | style="text-align: right; margin-right: 0.5em" | {{{pleidlais}}}* | style="text-align: right; margin-right: 0.5em" | {{{canran}}}* | colspan=3 bgcolor="#EEEEEE" style="text-align: left; font-size: 85%;" | *Heb gynnwys papurau a sbwylwyd |-