Support for Fianna Fáil has fallen two points to 35 per cent, according to an opinion poll published in the Sunday Business Postthis morning.
The Red C poll is also bad news for the Fianna Fail's coalition partner the Progressive Democrats which has seen its support halved to just one per cent.
There was slightly better news for the third Government party, the Green Party which saw its support climb one per cent to 8 per cent.
Sinn Fein and Labour are also up one per cent, to 9 and 11 per cent respectively, while Fine Gael dropped back a single point to 30 per cent.
The poll was carried out on either side of the Easter weekend.