Government parties have stepped up calls for support for the European fiscal treaty, as a poll showed a rise in backing for a "No" vote in the referendum.
The directors of elections for Labour and Fine Gael, Joan Burton and Simon Coveney, said the deal would not solve Ireland's problems but would be a major step on the road to economic recovery.
A poll showed 47% would vote in favour of the treaty, but the support for a "No" vote moved up two points to register 35%.
Sinn Fein president Gerry Adams said the treaty would be a block to growth and undermine efforts to cut unemployment.
But Joan Burton said: "The Stability Treaty is really about the euro in your pocket and the need to put it on a long-term stable footing. It is about ensuring that foreign employers continue to invest here. It is about having an insurance policy that gives this country access to a special assistance fund if we need it."
She added: "Opponents of the Stability Treaty are not just asking you to vote No. They are also asking you to take a leap into the dark which will put this country back into the eye of the political and economic storm."
Mr Coveney asked people to read the treaty for themselves when it arrives in households. "Unlike previous treaties, this is not a long or complex document - but it is hugely important. The treaty will not solve all of Ireland's problems, but is a major step forward on our road to recovery," he said. "It will ensure that no future government can spend the people's money recklessly and it will provide access to emergency funding should we need it."
Mr Adams said voting Yes would deliver extended rounds of cuts into the future. He said: "The single biggest challenge facing the economy is getting people off the dole and back to work. This is the only way to boost growth and reduce the deficit."
The research showed 47% said they would vote in favour of the treaty, but the support for a "No" vote moved up two points to 35%, with 18% undecided.
The Sunday Business Post/Red C poll also tested party support and placed Fine Gael at 32%, while its coalition partner Labour was at 14%. The data showed Sinn Fein was in second place in party ranking with 19% support, with Fianna Fail on 17%.