halachic state

It is one thing, and understandable, for people like Netanyahu and others in the Likud to try to calm people down and say they wont allow it to turn into a halachic state. They dont want that either.
What I dont get is the campaign from UTJ and Shas and DL parties saying it. Isnt that what they want? And if they do not want it, why not? Arent they not fully invested in the State just because it isnt and their ultimate goal would be to turn it into a halachic state? Why are they trying to calm everyone ...