Division number 186 – in the House of Commons on 1 Chwefror 2011.
A majority of MPs agreed and wedi pleidleisio against a proposal that if a proposed transfer of powers from the UK to the EU was rejected in a referendum a subsequent, binding, referendum ought be held on the UK's membership of the EU.
Eisiau deall mwy am y bleidlais hon? Darllenwch y ddadl yr oedd yn rhan ohoni.