A new Sunday Times/Behaviour and Attitudes opinion poll suggests that support for Fine Gael has increased over the past fortnight but Sinn Féin remains the most popular party.
The poll surveyed more than 900 voters over 13 days up to last Tuesday. It has a margin of error of 3.3%.
It indicates that Fine Gael has increased its support over the past few weeks, while Sinn Féin's has plateaued.
Support for Fine Gael has increased by three points to stand at 21%, while Sinn Féin's support remains unchanged at 35% compared to the last poll published on 1 March.
Fianna Fáil's support has slipped slightly by one point to 19%.
Independents are up one point, with support for non-party candidates gauged at 11%.
The Green Party remains unchanged at 6%, while the Labour Party stands at 3% - also no change.
The Social Democrats fell by one point to 1%, while support for Solidarity-People Before Profit is unchanged at 3%.
Aontú fell by one point to stand at 0%.
All the changes in party support are within the opinion poll's margin of error.