Former Plaid Cymru president Dafydd Wigley has confirmed that he hopes to return to the Welsh assembly.
Plaid Cymru won 17 of 60 assembly seats under Dafydd Wigley in 1999
At Plaid's conference in Carmarthen on Saturday he announced he was seeking nomination for the 2007 election. He is likely to stand on a regional list.
He led Plaid to its greatest success at the first assembly election in 1999, but ill health meant he stood down from the party's top job in 2000.
Mr Wigley, 62, then gave up his Caernarfon seat at the 2003 election.
Mr Wigley, who was made the party's honorary president last year, told S4C that he wanted to re-enter frontline politics.
Political analysts believe he will try to return to Cardiff via the list system as a candidate in either the South Wales Central or North Wales regions.
DAFYDD WIGLEY FACT FILE
Born: Derby, 1 April 1943
Educated: Manchester University; industrial economist
Married: Elinor Bennett
Elected: Caernarfon MP 1974-2001 and AM 1999-2003
Sponsored: Disabled Persons Act of 1981
Plaid Cymru: president 1981 - 4 and 1991 - 2000
The party currently has a vacancy in South Wales Central, which covers Cardiff, Vale of Glamorgan, Cynon Valley, Pontypridd and Rhondda.
One of its current two AMs for the area, Owen John Thomas, will be standing down at the next election.
Supporters of Mr Wigley have said he could be about to put himself forward for that vacancy.
He became MP for Caernarfon in 1974, standing down in 2001. He served as party president twice, from 1981 - 1984, and again from 1991 - 2000.
Plaid Cymru has also announced that it plans to run US-style leadership elections for its two top posts - leader of its assembly group, and president.
It would mean that both party members and registered supporters would be able to vote.
Plaid claimed it would be the first party in the UK to "adopt a more open internal electoral system".
Plaid director of elections Adam Price, MP for Carmarthen East and Dinefwr, said that if agreed, it would be used at the next contested election for both posts.
Mr Price said: "Plaid has announced a series of measures to accompany our rebranding to show that we are a party with open doors as well as open minds.
"These proposals embody our determination to engage more fully with the people of Wales."