It is the curious case of the disappearing Fianna Fáil politicians. At a time when the party's popularity in the polls has never been lower, two current party TDs have omitted any mention of Fianna Fáil on some of their key promotional materials.

Visitors to ex-minister Willie O'Dea's personal website, willieodea.ie, could be forgiven for wondering which party he has represented in Limerick since 1982. The site's home page contains no mention of his membership of Fianna Fáil, nor any pictures of the man himself with any of his erstwhile ministerial colleagues.

While the biography section tells us that he was "born and raised in Kilteely, Co Limerick" and educated at the Patrician Brothers College, Ballyfin, Co Laois, and UCD – and that he has "consistently headed the poll" in the Limerick East constituency – it similarly makes no reference to his Fianna Fáil roots.

"He writes regularly for the Sunday Independent and occasionally for other national newspapers," it adds.

Again, the "political career" section notes that he was appointed minister for defence in September 2004 and "was reappointed to that office following the June 2007 general election and on the appointment of Brian Cowen as Taoiseach in May 2008 and served in that position until February 2010".

But again, there is no mention of the fact that he was a leading member of Fianna Fáil throughout this time.

Members of the public trying to ascertain which party Chris Andrews represents would be similarly hard pressed to do so from the sign over his constituency office on Dublin's Pearse Street.

It does not contain the words 'Fianna Fáil' anywhere, but instead features a 'Fianna Fáil' harp. Unlike his parliamentary party colleague, Andrews' website does at least state "Fianna Fáil" clearly on the right-hand side of his home page.

O'Dea told the Sunday Tribune that he had not set up the website himself but that it had been done on his behalf.

The omission of any reference to his membership of Fianna Fáil was "absolutely not" deliberate in light of the party's current travails.

"I'm Fianna Fáil in all my calling cards and material," he said.

Andrews told the Sunday Tribune that he had intended to cover the constituency office window – which is frequently shuttered – with a large sticker that includes the words 'Fianna Fáil' but had not had a chance to do so yet.

He also suggested that the omission of the words from the sign was an oversight.

"People would know I'm Fianna Fáil. I am Fianna Fáil through and through and I'm certainly not ashamed of it," he said.