However, just over half of councillors voted in favour.
Fine Gael members have approved going into government with Fine Gael and Fianna Fáil.
90 per cent of their TDs, Senators and MEPs voted in favour of the deal.
It was 85% among the national executive, and 71% support among constituency delegates.
However, just 57% of local councillors in Fine Gael voted in favour.
Longford/Westmeath TD Peter Burke says the result is pleasing but significant challenges remain: