On 31 May 2024, it was announced Barros-Curtis had been selected as Labour candidate for the safe
Cardiff constituency of
Cardiff West, after the sitting Labour MP,
Kevin Brennan, had announced his intention to stand down. The selection had been made by a panel composed of Welsh Labour's Welsh Executive Committee and representatives from the local Labour parties. Anger was expressed by Labour Party members that Barros-Curtis lived in London, had no connection to the area and had been "
parachuted" into the constituency It was reported that the
Senedd member for
Cardiff West (and former
Wales First Minister),
Mark Drakeford, had refused to share the same office and was looking for new premises. Barros-Curtis won the Cardiff West election with approximately one third of the votes (16,442) with a majority of 7,019 over the second-placed
Plaid Cymru candidate. ==Personal life==