John C. Wright compares the GOP and Democratic platforms on abortion. It truly is a life and death difference:
Democratic Party Platform on Abortion (source http://www.issues2000.org/Celeb/Democratic_Party_Abortion.htm)
The Democratic Party strongly and unequivocally supports Roe v. Wade and a woman’s right to make decisions regarding her pregnancy, including a safe and legal abortion, regardless of ability to pay. We oppose any and all efforts to weaken or undermine that right.
The Republican Party Platform on Abortion (http://www.ontheissues.org/celeb/Republican_Party_Abortion.htm)
Faithful to the “self-evident” truths enshrined in the Declaration of Independence, we assert the sanctity of human life and affirm that the unborn child has a fundamental individual right to life which cannot be infringed. We support a human life amendment to the Constitution and endorse legislation to make clear that the Fourteenth Amendment’s protections apply to unborn children. We oppose using public revenues to promote or perform abortion or fund organizations which perform or advocate it and will not fund or subsidize health care which includes abortion coverage.
The Catechism of the Catholic Church on Abortion (http://www.vatican.va/archive/ccc_css/archive/catechism/p3s2c2a5.htm)
2270 Human life must be respected and protected absolutely from the moment of conception. From the first moment of his existence, a human being must be recognized as having the rights of a person – among which is the inviolable right of every innocent being to life.
2271 Since the first century the Church has affirmed the moral evil of every procured abortion. This teaching has not changed and remains unchangeable. Direct abortion, that is to say, abortion willed either as an end or a means, is gravely contrary to the moral law:
2272 Formal cooperation in an abortion constitutes a grave offense. The Church attaches the canonical penalty of excommunication to this crime against human life.