Leo Varadkar has undertaken his final engagement as Taoiseach and is expected to arrive at Áras an Uachtaráin this evening, where he will inform President Michael D Higgins of his resignation.
Mr Varadkar announced his decision last month, saying he no longer felt he was the best person for the job.
Earlier today he visited Northern Ireland for a meeting of cross-border ministers as his final engagement.
Simon Harris is poised to take over as Taoiseach following a Dáil vote tomorrow and will appoint his Cabinet later that day.
Mr Harris’s elevation to Taoiseach will leave the Minister of State for Higher Education post vacant, while the Minister for Enterprise, Trade and Employment role will also need to be filled following Simon Coveney’s announcement that he was stepping down.
