The problem is, you can't have half an abortion, which means there is little ground for compromise. If you believe that life begins at conception, then you believe abortion is murder. And efforts to get around that fact by declaring a fetus as something less than human is akin to the process of dehumanization that is associated with genocide - the first act typically is to declare some ethnic group as less than human so it's easier to justify exterminating them.
It is only a matter of time. Someone who seeks an abortion is probably pro-choice. Pro-Choice people are usually left wingers. The kid that they aborted would had probably been left-wing too. Eventually they will diminish their own population to a point where they will become insignificant.
Between that and their own self-destructive behavior, their days are counted.
That SOUNDS nice and 'compromising,' but we are talking about a human life here, not the choice of how much land each party gets.