The Conservative AM Alun Cairns has been selected to fight the Vale of Glamorgan seat at the next general election.
Alun Cairns is the third Tory AM bidding to become an MP
Mr Cairns, who represents South Wales West as a regional AM, will be taking on the Labour MP, John Smith, who currently commands a majority of 4,700.
Speaking after his selection on Friday evening, Mr Cairns said that he was delighted at being selected and that he was "ready to do battle" to help the Tories to win back a seat they last held between 1992 and 1997.
Alun Cairns is the third sitting Conservative AM, to be selected to fight a Westminster seat.
His colleagues at the Welsh assembly, David Davies and Jonathan Morgan, will be contesting Monmouth and Cardiff North respectively at the general election, which most commentators expect to be held next year.
David Jones, who became a Conservative AM for a short period before the last Welsh Assembly election, will also be trying to make his way to Parliament in 2005, when he stands in the former Conservative stronghold of Clwyd West.
In a statement on Friday night, the Conservative leader in the Welsh assembly, Nick Bourne said that he was "delighted that Alun Cairns had been chosen".
He added that, when elected, Mr Cairns along with Jonathan Morgan, David Davies and David Jones would be able "to share with Parliamentary colleagues their experience of working in the National Assembly, something that will be essential for the party as it develops policies for all parts of the UK".