Taoiseach: Simon Harris becomes Ireland's youngest premier
The 37-year-old's nomination was backed in the Dail
Simon Harris will be confirmed later today (Tuesday) as the new Taoiseach.
At the age of 37, he is Ireland's youngest-ever premier.
The nomination of the Fine Gael leader was backed in the Dail
TDs voted 88 to 69 in support of Mr Harris, who will now travel to the official residence of President Michael D Higgins where his appointment as the country's youngest premier will be confirmed.
The president will sign the Warrant of Appointment and hand the Seal of the Taoiseach and the Seal of Government to Mr Harris at a ceremony at Aras an Uachtarain in Dublin'sPhoenix Park.
Mr Harris, a 37-year-old father-of-two, will become Ireland's 15th Taoiseach after the surprise resignation of Leo Varadkar as Fine Gael leader three weeks ago.
Mr Varadkar formally resigned at an audience with Mr Higgins on Monday evening, paving the way for Mr Harris's election on Tuesday.
The Wicklow TD's wife Caoimhe and young children Saoirse and Cillian were in the public gallery of the Dail for the proceedings, as were his parents and brother and sister.
Mr Harris will assume the lead of the Fine Gael, Fianna Fail and Green Party three party coalition government with less than a year to run before a general election must be called.
Government TDs rose to applaud as the outcome of the vote was announced.
Addressing the Dail, Mr Harris said: "I do accept this nomination to serve as Taoiseach and I commit to doing everything that I can to honour the trust that you have placed in me today."
In the wake of Mr Varadkar's resignation, Mr Harris emerged as the only contender to replace him as Fine Gael leader.
He has pledged to focus on more "bread and butter" issues and has repeatedly mentioned supporting small businesses facing high costs, helping farmers and focusing on crime and security.
Mr Harris has also made clear he intends for the coalition between Civil War-era rivals Fine Gael and Fianna Fail, as well as the Greens, to run its full term to March 2025.
Mr Harris's first task as Taoiseach will be handling a reshuffle of Fine Gael ministers in the administration, including which of his colleagues replaces him as Minister for Further and Higher Education.
During the nomination proceedings, Opposition TDs repeatedly called for an immediate general election, as they criticised the nomination of a new taoiseach without first going to the electorate.