Division number 152 – in the House of Commons on 16 Rhagfyr 2015.
A majority of MPs wedi pleidleisio against proposals to make the number of MPs from each party in the House of Commons more closely reflect each party's share of the national vote and against a move to fewer constituencies.
Eisiau deall mwy am y bleidlais hon? Darllenwch y ddadl yr oedd yn rhan ohoni.