Fianna Fáil has gained three points and has the support of 24% of voters, a new opinion poll suggests.
The Sunday Times / Behaviour & Attitudes survey indicates Sinn Féin remains the most popular party at 34% which is unchanged.
The polls suggests Fine Gael is down one point at 19%.
It says the Green Party and Labour are both down two points at 4%.
While the Social Democrats and People Before Profit Solidarity are both unchanged at 2%.
Aontú was up one point to 1%, while Independents were up one point to 10%.
The poll was carried out between 28 June and 12 July and surveyed 910 eligible Irish voters.
