Santorum is unequivocal in his opposition to abortion in ALL cases, even rape. Not sure about Bachmann.
Perry believes it should be legal for rape and incest.
Romney has no core positions.
Bachman is 100% like Cain.
Santorum appears to have some exceptions when talking about the morning after pill: http://ontheissues.org/PA_Senate_2006.htm
Now why should a baby be subject to the death penalty for someone else's crime, Slick Rick?