Regular voting time was scheduled for 4:15pm on Tuesday, prior to the stage three debate, and would be around 5:55pm on Wednesday.
Roedd yr amser pleidleisio arferol wedi ei drefnu ar gyfer 4:15pm ddydd Mawrth, cyn y ddadl cyfnod tri, a byddai amser pleidleisio tua 5:55pm ddydd Mercher.