Labour TD Aodhán Ó Ríordáin has launched his bid to lead the party, saying he would place workers' rights at the centre of a bold policy agenda.
He said he would break the employer veto on negotiating with workers and if this was declared unconstitutional, he would pursue a referendum.
He was proposed by Louth TD Ged Nash, who said there was an existential threat to Labour and Mr Ó Ríordáin would help the party find its full voice and get its mojo back.
Fellow TD Alan Kelly has also declared his candidacy.
The leadership will be decided by membership vote to be announced on 3 April.
Ò Ríordáin: I was the principal at local girls national school - came here to train the football team. Heartbreaking to see all the reasons the girls couldn't maximise their potential pic.twitter.com/PfZVcK4dqO— Sandra Hurley (@sandra_hurley) February 21, 2020