Economy Minister Edwina Hart has now issued a statement confirming that she's stepping down as an AM at next year's Assembly election.
Together with Finance Minister Jane Hutt, Edwina Hart is one of just two AMs to have been in the Welsh Cabinet since it was first formed under Alun Michael in 1999. She contested the Welsh Labour leadership when Rhodri Morgan stood down as First Minister but was defeated by Carwyn Jones.
Two of Edwina Hart's constituency neighbours have also announced today that they're standing down. Gwenda Thomas also confirmed her decision to her local party in Neath this evening, with Keith Davies earlier making his announcement in Llanelli.
One of the two Assembly members to have served in every Welsh cabinet since the first election in 1999 is expected to announce tonight that she won't stand again next year. Economy and Transport Minister Edwina Hart is understood to be making the announcement to her Gower constituency party this evening.
The former Deputy Health Minister Gwenda Thomas is also due to tell her local party in Neath tonight that she too won't be seeking re-election. They join Keith Davies who announced earlier today that he will be quitting Llanelli after just one term as an AM.
So three Labour AMs in neighbouring seats are all leaving the Assembly next year. But it's Edwina Hart's decision that will command the most attention. One of the most powerful figures in the Welsh Government, responsible over the years for finance, health and now the economy, she'd been tipped as a possible successor to Dame Rosemary Butler as the Assembly's Presiding Officer.
The Labour party encourages its AMs and MPs not to leave it so late to declare their intentions and another five have already done so. Last minute announcements are by no means unusual but by delaying her decision Edwina Hart has left herself open to suggestions that she fears the loss of Gower to the Conservatives, who won the Westminster seat for the first time at the General Election last month.
The Deputy Minister for Children and Social Services says she can "learn a lot from families" who have already been through the adoption process, as she tries to eliminate delays in the system. Gwenda Thomas met a family who have adopted two of their three children in Cardiff this morning.