There has been a substantial increase in support for Sinn Féin over the past month according to a new opinion poll.
The RED C survey for tomorrow's Sunday Business Post also sees the Coalition parties lose some of their recent gains.
Both the 'Yes' and 'No' votes in the same sex marriage referendum are down, with an increasing number of people undecided.
In the past month support for Fine Gael and Labour has dropped two points each to 25% and 8% respectively.
Fianna Fáil go up 1% to 19%, with Sinn Féin gaining 5% to stand at 22%, recovering all of their losses a month earlier.
Independents and Others are down 2% to 26% - the Greens and Renua Ireland are included there on 1% each.
The poll - conducted on Monday, Tuesday and Wednesday of this week among 1006 adults - also assessed those in favour and against the same sex marriage referendum.
Support levels in this poll compared to a RED C poll six weeks ago, show the 'Yes' at 72%, down slightly, 'No' at 20% also down slightly and an increase in 'don't know' to 8%.
One in three of likely 'Yes' voters also expressed some reservations.