Well sort of, I'd say that would really make the other's simply not completely libertarian
"If the fetus is human, then it has rights, if it is not, it does not have the same rights."
Really? What does "human" mean? I'm asking you in all seriousness.
I'd say a combination of many things including would be: complex and abstract thought, reasoning, form (shape), & of course having a soul.
Also, as Cato points out so eloquently, the GOP really isn't all that Pro Life either, regardless of what their platform says.
Well, first, we'll never know when a child has a soul. My attitude is to assume that ensoulment happens at conception; call it "playing it safe". No one can know the will of God so we have to assume the best. Second, if you're willing to destroy life that doesn't engage in abstract thought, well infanticide might be for you. Babies can't reason.
People who are pro-choice seem to have this breezy attitude of "if you can't see it, it's o.k. to kill it".