The art of poltics, unfortunately, is compromise - we "accept" a certain number of traffic fatalities every year as a society - more than would ever be aborted from rape and incest.
Of course, and that's why I'd support a law that bans abortion in every case other than rape and incest. Philosophically, of course, I would oppose these exceptions, but I think the pro-life movement should take what it can get.
Incrimentalism has been pretty effective a strategy thus far. I am convinced within my lifetime Roe v. Wade will be overturned, and there will be several states with laws as strict as South Dakota's. But I realize that now is not the time.