I'm not sure that that majority of people supporting access to abortion are moral relativists, whether normative or descriptive. While certainly there are some who find nothing wrong with abortion, I don't think it's an accurate depiction.
Many take the position abortion is a a wrong, but that the particular wrong is not something that lends itself to prohibition through laws and earthly judgment, due to the unique circumstances. It then is left to the woman and her maker.
The irony of this thread,of course, is that 90% of Planned Parenthood's patients are there for contraception, for the prevention of a pregnancy,rather than an abortion. Around here, none of the Planned Parenthoods even perform abortions.
