A group representing 50 Fianna Fáil councillors and a thousand grassroots members has said it will campaign against the Programme for Government.
Fairer Future said the coalition deal published today will amount to a continuation of the status quo by keeping Fine Gael in power.
Tipperary county councillor Kieran Bourke says it's not what he campaigned for in the general election race.
Cllr Bourke said: "I told people at the doorstep that I wanted to get rid of the Fine Gael government, that they should be put out of office.
"Now I feel I have to go back to those people and say 'no, no, no, I wasn't telling you the truth. I'm now supporting them, my party is supporting them, we want to keep them in office'."