To answer B-Man's question:
First, the mother's life always comes before the child's, to me. If she's in danger and an abortion is necessary to save her, then do it. I don't think there should be any restrictions on that (though if she's nine months pregnant, they'd probably do a c-section). If a c-section wouldn't work for whatever reason, then I'd still support the abortion. The mother has a life, she has people who depend on her. The fetus/baby/whatever (not sure how I'd define it at that point) does not.
Beyond that, the line is kinda fuzzy. I mean, it sounds pretty inhumane for a woman who's nine months pregnant to go in and have an abortion, just because she suddenly didn't feel like dealing with a kid. I'm not sure how you abort a baby that's pretty much fully grown (partial birth?), but it does sound kinda gruesome. However, even if we didn't have restrictions on third trimester abortions, I'm pretty sure such an instance would be extremely rare, because the woman will have likely decided by then. If I were in charge of abortion laws, I'm not sure what I'd do in such cases, since I don't like regulating anyone's body.