Shane Ross has said that there is still a future for his alliance of independent TDs, despite Stephen Donnelly's decision not to take part.
The Wicklow-based TD today said he would not be joining the alliance - but could yet join another group, if one emerges.
Deputy Ross has set up the group alongside fellow independent Michael Fitzmaurice.
He says he is disappointed that Stephen Donnelly will not be joining - but that he is happy with how big the alliance has become.
"I believe that the radical idea which we have is catching on, which is basically to have an alliance of TDs without taking a party whip," he said.
"That's something, I think, he doesn't like, and he's perfectly entitled to it.
"But I want to see something completely and utterly new, and a change in Irish politics."