The Sunday Times/B&A poll suggests Sinn Féin are the most popular opposition party, up 3 points to 24 per cent support.
They have overtaken Fianna Fáil who are down 2 to 23 per cent.
New Sinn Féin leader Mary Lou McDonald has a satisfaction rating of 52 per cent, one per cent behind Taoiseach Leo Varadkar.
The poll also suggests a three point drop for Fine Gael who are down to 30 per cent.
That poll was done between May 3rd and 15th among 935 people.
A Sunday Business Post/Red C poll puts Fine Gael up 2 to 34 per cent, Fianna Fail unchanged on 25 per cent support and Sinn Féin up 2 to 16 points.