Fine Gael has seen support slide in the latest opinion poll, down one to 20 per cent.
Sinn Féin is the most popular party in the country on 22 per cent, up three, alongside Fianna Fáil on 22, unchanged.
The Business Post Red C poll shows the Social Democrats have done well. They have gained two to seven per cent, while Aontú is on four.
There is disappointment for Labour, which has dropped two points to three per cent.
Business Post Editor Daniel McConnell does not think Fine Gael will feel too hard done by.
"I wouldn't say they'd be too disappointed. It's not like they're now four or five points behind or they're now lacking the way Fianna Fáil had been lagging behind for a long period of time in the last government," he said.
"So I think if you're Simon Harris I think you'd be pretty sanguine given that they've come out of what was a pretty bruising election campaign. They've come out with a good result from their perspective."