Shadow Welsh Secretary Owen Smith MP has hailed Labour's win in the Cardiff South & Penarth by-election as a sign voters want "a new deal".
Voters in Cardiff South and Penarth have sent David Cameron a clear message today: they want a new deal in this country - a One Nation deal which delivers a fairer society and an economy that works for us all not just the most privileged.
People here rejected the Conservatives mean and divisive idea of 'sink or swim' Britain and urged Labour instead to build a country and an economy in which everyone might have a fair chance, a country we can be proud of once more.
Stephen Doughty will be the new MP. He's increased Labour's majority slightly, but turnout was just 25%.
Counting begins to find out who voters in Wales' biggest constituency by population have chosen as their new MP.
It's the final day of campaigning before the Cardiff South and Penarth by-election.