Sinn Féin has overtaken Fine Gael to become the most popular political party in the country.
It has gained two percentage points to hit 32%, according to a new opinion poll.
Fine Gael have lost four points, falling to 27% support, according to the Sunday Times/Behaviour and Attitudes survey.
Fianna Fáil sits in third place, up three to 22%.
The Labour Party is up one point to 5%, while the Greens are down two to 3%.
There was no change in popularity for Solidarity-PBP which has 2% support.
Both the Social Democrats and Aontú are down one to 1% and 0% respectively.
Independents and others have seen a rise of two points to 7%.
The findings compare with the last Behaviour and Attitudes survey carried out between October 1st and 13th.
Today's poll was conducted face-to-face with 916 eligible Irish voters from December 3rd to 15th.
It has a margin of error of plus or minus 3.3%.
Main image: Sinn Fein leader Mary Lou McDonald. Credit: Niall Carson/PA Wire/PA Images