Candidates hoping to secure the top job as leader of the Labour Party have until tomorrow to submit their nominations.
Social Protection Minister Joan Burton and Junior Health Minister Alex White have already put their names forward to contest the leadership position following Eamon Gilmore's resignation as Labour leader last week.
Meanwhile, the contest for the position of deputy leader of the Labour party now looks set to be a four-horse race.
The Junior Transport Minister Alan Kelly, the Minister of State for Research and Innovation Seán Sherlock and Cork TD Michael McCarthy have already declared their candidacies for the position.
But, Waterford TD Ciara Conway is expected to throw her hat into the ring during a press conference in Dungarvan later.
Political analyst Odran Flynn says there is speculation about a possible third candidate entering the leadership race.
"Well currently there are two definites - Joan Burton and Alex White," Mr Flynn explained.
"It has been suggested that Arthur Spring is going to throw his name into the ring either today or tomorrow.
"He is going to go for the Munster vote, obviously, because Labour were very very badly damaged overall last weekend, but particularly in the rural constituencies."