The Children's Minister Frances Fitzgerald is refusing to be drawn into a possible coalition rift on the abolition of the Seanad.
It is reported the Tánaiste has told the parliamentary Labour Party they'll be free to campaign to keep the Seanad.
But abolition of the upper house of Parliament was one of the key promises made by Enda Kenny to the electorate.
Fitzgerald says the issue has to come before the Cabinet, but insists she plans to toe the line: "I would be supporting the government position when the times comes but at the end of the day we have said it's for to the people to decide.
"We will ask the people to make the decision. I will abide by the government line that we are putting a referendum on the abolition of the senate to the people. That's what we said we would do."