Fine Gael is lagging behind coalition partner Fianna Fáil in the latest opinion poll out today.
Fine Gael has dropped three points to 17%, but Fianna Fáil is up two to 22% in the Business Post/RED C poll.
Sinn Féin's support has fallen by one and is alongside Taoiseach Micheál Martin's party on 22%.
The Social Democrats' are the same on seven; Labour, Aontú, and Independent Ireland are on four, and the Greens and PBP/ Solidarity are all unchanged on three.
Business Post Political Correspondent Cónal Thomas said the Fine Gael leader won't be pleased.
"The main finding is bad news for Simon Harris," he said.
"Effectively, Fine Gael has slumped to its lowest level of support in the history of Business Post/Red C polling.
"The party is down to 17%, which puts it five points behind the coalition partners in Fianna Fáil, and five points behind the main opposition party in Sinn Féin.
"Sinn Féin has dropped down marginally to 22%."
Red C interviewed a random sample of 1,002 adults aged 18 and over, online, between March 21st and 26th.
Main image: Simon Harris and Micheál Martin at a press conference. Photograph: Sasko Lazarov / © RollingNews.ie
