I can really relate to your post, and Erica's response. You really do have my sympathies and best wishes for all involved. My father was an alcoholic (he's passed away) and was both physically and verbally abusive. I loved him very much, and I'm sure, as a child, I would have been very sad at first if he wasn't living at home.**
You seem to imply that his drinking is either under control or sporadic at the present. You also seem to be saying that you want to leave him, but you're afraid to do so because it might send him on a binge.
If you want to leave him for your sake, but still want him in your daughter's life, leave him. How he reacts to this is not under your control.
If you don't want to leave him, don't leave him. How he reacts to this is not under your control.
If you want to leave him but fear for your daughter's relationship with him, see a counselor to discuss the impact it might have on your daughter, good and bad. How he reacts to this is not under your control.
Nothing about his actions is under your control, and you will never make him better or worse.
Karl's suggestion was a very good one. Al-Anon is free and easily accessible. It will put into perspective your role as his spouse and the mother of his child, and your power over his alcoholism. It will help you to establish clear, reasonable boundaries, which helps everyone (including him).
Also, start working on your alternate living arrangements now. Start putting aside cash - even just small amounts - that only you have access to. Make contact with someone at an abuse hotline (I don't know if there is a special hotline for spouses of alcoholics) where they will guide you in a safe way to leave, and how to stay safe after you've left.
I realize that leaving someone is a huge and frightening step, and I know there are many reasons women don't leave their spouses. I understand that.
I don't know what my life would be like now if my mother had left my father, but I do understand why she didn't leave. I don't blame her for staying, but I do wish she had been braver and tried, if not for herself, then for the sake of my siblings and me.
You are between a rock and a hard place, you really are. Look carefully and fearlessly (it's only a look after all) at both the rock and the hard place, then decide on which you want to land. In either case, never stop trying to mitigate the effect of her father's abusive behavior on her. Words hurt more than beatings.
**I also would not have depended on unreliable sources for my protection, and might not have developed some maladaptive behaviors. As a result of living with him growing up, I had a very mediocre (at best) relationship with him as an adult.