A confidence motion in the Taoiseach is possible in the next few weeks, according to one backbench TD.
Micheal Martin is under growing pressure to step down as leader of Fianna Fail following the Jim Gavin debacle.
A review of the party's handling of the presidential election campaign is taking place.
Fianna Fail TD Malcolm Byrne says Micheal Martin can win back support, but thinks an internal party confidence motion could happen: