Labour TD Alan Kelly has said there needs to be a 'radical shake-up' within the party.
He was addressing calls for Brendan Howlin to step down as party leader.
A number of Councillors have already called for a change at the top, while others have spoken out in support of the party leader.
However, Deputy Kelly - who hoped to challenge Deputy Howlin the 2016 leadership contest, but failed to secure a nomination - has become the highest-profile member of the party to weigh in.
In an interview on Tipp FM this morning, Alan Kelly said he would be willing to put his name forward if a vacancy arises in the party leadership.
Deputy Kelly said he agrees it's time for a "radical shake-up", adding that the current leader "needs to consider what is best" for the party.
The Tipperary TD observed: "We need to change the direction of the party. We need a different vision. We need far more energy.
"We need to ensure that with that change that we bring people with us, at a scale that will ensure that the party will be in a very good place in years to come.
He added: "At this moment in time that is not happening - and I am not seeing anything to make it happen. So it does need that significant change, yes."
Recent opinion polls have shown Labour on just 3% support, two years into Brendan Howlin's leadership - and Deputy Kelly says those numbers are "deeply concerning".
In the 2016 general election, following their role in a coalition Government with Fine Gael, Labour lost 26 seats in the Dáil - prompting then leader Joan Burton to resign from the role.
