Division number 78 – in the House of Commons on 9 Chwefror 2010.
A majority of MPs agreed and wedi pleidleisio for the proposed Autumn 2011 referendum on the system for electing MPs to be on moving to the Alternative Vote system rather than on moving to the Single Transferable Vote.
Eisiau deall mwy am y bleidlais hon? Darllenwch y ddadl yr oedd yn rhan ohoni.