The key phrase here is some circumstances. The Aboslutely no abortion whatsoever anytime, anyplace under any circumstances crowd is not a large constituency.
Most people at the very least would support emergency abortion if the mother's life is in dire peril. And I'd bet money that no less than 50%+1 of the adult population supports elective abortion during the first trimester of pregnancy.
Many of these folks vote Republican. A few even post on this forum.
All this obscures the difference between an abortion and saving the life of the mother in a way that results in the death of the baby. Apparently, most Freepers don't either. Example: In an ectopic pregnancy, the doctor could go in and unwrap the baby from the umbilical cord. The baby is most likely going to die. As opposed to performing an abortion, which is going into the womb with the express purpose of killing the baby by cutting it up and extracting it.