62% of seats were uncontested – meaning that no election was held – and 16% of seats were unfilled, to be filled through further election or by co-option.
Roedd 62% o’r seddi’n rhai diymgeisydd – sy’n golygu na chynhaliwyd etholiad – ac roedd 16% o’r seddi heb eu llenwi, a chânt eu llenwi drwy etholiad ychwanegol neu drwy gyfethol.