Some people who are pro-choice see abortion as a last resort and focus on a number of situations where they feel abortion is a necessary option. Among these situations are those where the woman was raped, her health or life (or that of the fetus) is at risk, contraception was used but failed, or she feels unable to raise a child. Some pro-choice moderates, who would otherwise be willing to accept certain restrictions on abortion, feel that political pragmatism compels them to oppose any such restrictions, as they could be used to form a slippery slope against all abortions.
On the issue of abortion, pro-choice campaigners are opposed by pro-life campaigners who argue that the central issue is a completely different set of rights. The pro-life view considers human fetuses and embryos to have the full legal rights of a human being; thus, the right to life of a developing fetus or embryo trumps the woman's right to bodily autonomy, although some pro-lifers believe that abortion should be legal in the case where the woman's life is at serious risk.
