Councillor Rene Kinzett has thrown his support behind Andrew RT Davies who was voted in as the leader of the opposition in the Senedd on Thursday, replacing Nick Bourne, who was forced to stand down after he lost his regional seat in the Welsh election.
He said: "As leader of the Welsh Conservatives on Swansea Council, I offer my full support and congratulations to our new Assembly group leader, Andrew RT Davies AM. Andrew is a stalwart campaigner for the Welsh Conservatives and has on many occasions come to Swansea to help us find new supporters and boost our vote at local, Assembly and Parliamentary elections.
"I know that Andrew has the experience, energy and enthusiasm to lead the Welsh Conservatives and to break new ground in firmly establishing our Party as the only alternative to Labour in Wales."
Mr Kinzett also congratulated leadership contender Nick Ramsay AM, who lost out in the vote.
He added: "Nick is a man with real vision and clear ideas about the new policies that the Welsh Conservatives need to develop in order to replace Labour as the party of government in Wales.
"I hope that our new leader makes full use of the talents of all our Assembly Members and takes into account the need to continue to modernise our party and to find new support for our party by reaching out to all communities across Wales."
Prime Minister David Cameron added: "We must now offer a strong Conservative voice for Wales and I look forward to working closely with Andrew to deliver this and realise our strong ambitions."
Meanwhile, it is believed Mr Davies will announce his shadow cabinet in a "couple of days".