Plaid Cymru's leader Rhun ap Iorwerth makes his keynote speech at the party's annual conference, which is being held in Swansea until Saturday. Candidates for the upcoming Caerphilly by-election: FF 1.1 CANDIDATE LIST - CAERPHILLY BY-ELECTION CANDIDATES Labour - Richard Tunnicliffe Plaid Cymru - Lindsay Whittle Reform UK - Llŷr Powell Conservative - Gareth Potter Green Party - Gareth Hughes 2. FF 2.1 CANDIDATE LIST - CAERPHILLY BY-ELECTION CANDIDATES Gwlad - Anthony Cook UKIP - Roger Quilliam