Fine Gael members have voted to ratify the programme for government, laving the way for a coalition with Fianna Fail and nine independents.
Fine Gael held regional meetings in recent days before the parliamentary party met in Leinster House on Monday to cast their vote on the deal.
The final result from all membership, councillor and parliamentary party votes was 93.9% in favour and 6.1% against.
Fianna Fail leader Micheal Martin speaking at Radisson Hotel, Dublin (Gareth Chaney/PA)
Fianna Fail voted in favour of ratifying the deal on Sunday by 812 votes to 62.
The Dail parliament is to sit on Wednesday when the new coalition comprising Fianna Fail, Fine Gael and several independent TDs will be officially appointed.
The 162-page programme for government, published during the week, includes smaller class sizes, reduced childcare costs and more gardai among its priorities.
Fianna Fail’s Micheal Martin is set to replace Fine Gael leader Simon Harris as taoiseach when the Dail meets on Wednesday.
He will hold the premier’s office for three years before it reverts to Mr Harris for the final two years of the mandate.
Meanwhile, a row is brewing between opposition parties and the group of independents supporting the government over whether the independents who are not given government roles can get speaking time in the Dail during opposition slots.
The Regional Group of Independents are to get four junior ministerial roles, while Michael Healy-Rae is also in line to become minister of state.
Opposition parties have criticised a move by the remaining independents to form a technical group that would give them speaking time in the Dail.
The Labour Party has prepared a draft submission to the Ceann Comhairle based on internal legal advice which it said contradicts advice given to the Ceann Comhairle that objects to the claim that independents supporting the government can “eat into Dail time that is allocated to the opposition”.