Keith Davies, the Labour Assembly Member for Llanelli, is seriously ill at the University Hospital of Wales in Cardiff.
Mr Davies, who's 71, was elected to the assembly after a career as a teacher and subsequently as Director of Education at Carmarthenshire County Council.
More top news
After a mostly dry evening with a few scattered showers, cloud and outbreaks of showery rain will spread northeast through the night.
Tributes have been paid to former Wales international Mel Charles, who has died at the age of 81.
Tablets - of the computing variety - could help help patients and doctors in Wales as part of a technology revamp.