Ireland's incoming leader has promised to work to renegotiate the country's crippling 85bn euro bail-out next week.
Enda Kenny of Fine Gael said he would fight for a cheaper loan deal from the International Monetary Fund and Europe.
His party is now the largest in the 31st Irish parliament, the Dail.
Meanwhile, Sinn Fein has won 13 seats so far in the Irish general election, a gain of eight on its representation in the last Dail.
Fine Gael, Labour and Sinn Fein have all won record numbers of seats but FG's rivals Fianna Fail suffered a crushing defeat. Mr Kenny said it was "a democratic revolution at the ballot box".
Votes are still being counted but Fine Gael is expected to be the largest party in the Republic's parliament, without having an overall majority.
Final numbers for the Dail parliament will not be decided until late on Sunday.
Mr Kenny plans to start fighting for a cheaper loan deal on 4 March when the European People's Party, to which Fine Gael is affiliated, meets in Helsinki. He will follow that up at the European Council in Brussels the following week.
Mr Kenny said the IMF/EU bail-out was "a bad deal for Ireland and a bad deal for Europe".
"We are not going to cry the poor mouth, other than to say the reality of this challenge is too much. I don't want to talk about difficulties, I look for co-operation, consensus and support across Europe," he said.
"We want to restore our pride at home and abroad. Our country is back in business."
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Analysis
image of Mark Simpson Mark Simpson BBC Ireland correspondent
Dublin is buzzing with speculation about a visit to Ireland by US President Barack Obama at the end of May.
The possible trip is likely to be discussed next month when Mr Kenny goes to Washington for the annual St Patrick's Day celebrations at the White House.
President Obama has distant Irish roots in the village of Moneygall in County Offaly.
If the president does go to Ireland, it may not be the only high-profile visit to Dublin this year.
The Queen may visit the Irish Republic for the first time, in a sign of how Anglo-Irish relations have been transformed by the peace process.
The incoming taoiseach also pledged to probe deep into the heart of the Irish banking crisis which has left the taxpayer saddled with crippling debts which some analysts believe could ultimately cost closer to 200bn euros.
"We do need to find exactly what went wrong here, who benefited from this and where decisions were made," he said.
"This is bridging the gap between government and people - that chasm there was very bad for democracy."
Meanwhile, Mr Kenny is weighing up options for a new government with his centre-right party Fine Gael on course to form a coalition with Labour, or a collection of independents if the numbers stack up.
He launched a fierce attack on the outgoing government, led by Fianna Fail, over its poor communications and lack of openness.
"I give you my guarantee that the incoming government is not going to leave the people in the dark about what is happening whether it is good or whether it is bad," he said.
Mr Kenny, who secured the biggest single vote in the country in his Mayo constituency, said he wanted a quick resolution to talks on a new government.
Fine Gael is on course for 75 plus Dail seats, just a handful shy of majority single party government in the 166 strong Dail.
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Irish politics
* Dominated by two parties, Fianna Fail and Fine Gael, which emerged after Irish nationalists split over the 1921 Anglo-Irish Treaty
* Fianna Fail was once seen as more centrist, Fine Gael as more conservative, but differences have blurred
* The Labour Party was the traditional junior partner in coalitions until 1997
* The Green Party came into its own in 2007 when it joined Fianna Fail in coalition
* Sinn Fein, shunned by the mainstream because of its IRA connections, held nearly as many seats as the Greens in the outgoing parliament
Fianna Fail leader Micheal Martin put on a brave face and said he believed that Fine Gael had managed to secure support from floating voters.
"There's a soft vote there for Fine Gael and Labour, just as there was for us for years," he said.
The party's biggest casualty was Mary Coughlan, the outgoing deputy prime minister, who was punished by voters in Donegal South-West as they opted to support an independent candidate in her own backyard.
Hers was one of several dynasties brought to a dramatic end.
"It's been a very difficult day for all of my colleagues, many of whom have lost their seats," she said.
Other big names to suffer included ministers Mary Hanafin, Barry Andrews and Conor Lenihan, himself from a powerful Fianna Fail family and brother of the outgoing finance minister Brian Lenihan who narrowly retained his own seat.
The Haughey name will also be absent from the Dail for the first time in 54 years after Fianna Fail's Sean Haughey lost his seat.
The Greens - former coalition partners - were wiped out. None of their TDs - two of whom held Cabinet posts up until a few weeks ago - were brought back to the Dail.
Leader John Gormley had always faced a tough battle in Dublin South East and blamed his failure on being in a government which made savage cuts.
"We have suffered a major defeat, but the party will regroup, we will continue. We're a party with a set of beliefs and values and a vision for the future. We have great people here. We're going to rebuild this party," he said.
Labour had one of its best ever performances with the prospect of supporting a coalition.
"That is the most likely outcome, there's no doubt about that," leader Eamon Gilmore said.
Source : http://www.bbc.co.uk/news/world-europe-12590868
