Leo Varadkar, leader of Fine Gael, has attended his party's Ard Fheis, where he defended his record and called for the need to redouble its efforts to engage with all communities in Northern Ireland.
As part of the deal agreed, he is set to replace Taoiseach Micheál Martin on 17 December.
He expressed that Fine Gael is a tried and tested party in government that understands the importance of building resilience and trust for dealing with crises such as Brexit, the coronavirus pandemic, and global financial crises.
The Tánaiste also praised Micheál Martin while criticizing Sinn Féin.
Fine Gael members gathered in Athlone, Co Westmeath, for their first in-person annual conference since 2019.
Simon Coveney, a Fine Gael minister, announced that more than 2,000 members had come together to "plot the way forward".
Leo Varadkar is set to become the Taoiseach next month under the government agreement formed with Fianna Fail and the Greens.
Varadkar called for Fine Gael to redouble its efforts to find a path forward to restore the government in Northern Ireland, adding that Fine Gael needed to engage and understand all communities in Northern Ireland as the current stalemate cannot continue.
Varadkar also defended his record after 12 years in government, stating that the party can be trusted in difficult times to protect jobs, businesses, and livelihoods at all costs.
The Tánaiste emphasised that we never know what we are going to face in a country, referring to crises such as the war in Ukraine, the pandemic, Brexit, and global financial crises.
On the other hand, Varadkar criticised Sinn Féin, a political party that would prefer a united Ireland, for its lack of engagement and praised the current Taoiseach Micheál Martin for his previous efforts in Northern Ireland.