This is a tricky question. Though I am no theologist, this is my analysis.
To my understanding, the Bible says every human being is given a soul+a guardian angel at birth. At birth. Not before birth. Fetuses, if aborted, are not born. So they are soulless... so by all accounts, spiritually, they don't exist.
However. I concede the fact that after the 6-7month period, fetuses look very much human. They move. They have brain functions. So if a fetus is aborted after the 6-7 month period, which is UNLIKELY. Most abortions are done to fetuses who are under 4-5months. But lets say, for the sake of discussion, that the mother who is 8 months into her pregnancy decides she wants an abortion. Abortion then can be considered premature birth... and so the child has a soul. And if he dies, if the proper rituals are made by a priest for absolution of the original sin, he goes to heaven.
Now. How do I reconcile my support for abortion (under 5-6months, as it currently is for most European states) even though I am a Christian? Simple. The law regarding abortion is a nation decision. Since I don't live in a theocratic state, Church laws are null and void, only state laws matter. So as a matter of state policy, I see no problem with abortion because it is a right that people should have. So people shouldn't be legally liable for having abortions.