Not in a legal sense. The state doesn't recognize, say a blastocyst, as a person with legal rights.
In a moral sense, I do see a small clump of cells as less than a full person, so there's not as much empathy there to say that its definately something as strong as a murder.
I would never do it, but I can see why other people might not have as much of a problem with it as they would with murder.
If so, why would you want it legalized?
Most of my reasoning for opposing abortion stems from religious ones, and I don't think those are a good basis to impose laws on. Its more about a lack of reason to criminalize than having a good reason to "make it legal". I think the default should be legality until sufficeint reason to make it illegal arrises.