Support for Fianna Fáil and Labour has dropped significantly, while Fine Gael and Sinn Féin receive a boost in an opinion poll for tomorrow's Irish Times.
The Ipsos-MRBI poll also shows satisfaction with the Government and its leaders at historic lows.
This is the first national opinion poll since the Budget, which may well have influenced the further collapse in support for Fianna Fáil, Brian Cowen, and the Government.
These are the lowest figures ever recorded in an Irish Times poll for Fianna Fáil, any Taoiseach or Government.
Support for Fianna Fáil is down 7% since September to just 17%.
Fine Gael gets a boost of 6% to move up to 30%, while Labour loses top slot, falling by 8% to 25%.
The Green Party is unchanged at 2%. Sinn Féin has almost doubled its support by moving up 7% to 15%. Independents and others are up 2% to 11%.
Satisfaction with the Government is down 5% to just 8% and 90% of voters are dissatisfied with the Government's performance.
Satisfaction with all the party leaders has dropped.
Taoiseach Brian Cowen is down 5% to 14%, Fine Gael’s Enda Kenny is down 2% to 23% and Labour’s Eamon Gilmore is down 5% to 44%.
The Greens' John Gormley is down 5% to 13% and Sinn Féin’s Gerry Adams falls 1% to 28%.
The poll was carried out on Monday and Tuesday of this week among 1,000 voters nationwide.