nurses and the union in fl

Recently in a meeting we have been told that we may now have a choice in joining a union within our hospital. We live in a state that has for the most part forbidden even the discussion of such. How do you feel about your union and which one do you have and does it help you and in what ways? I worked in NJ and belonged to a union and they saved my job, I feel very strongly that it is a good thing. Any feedback on which ones work and how it gets started from the beginning?
I think some of the nurses are afraid they will lose their jobs if they talk about it. There are many disgruntled nurses and we have lost many of them to other local hospitals, we are in need of CHANGE!