The newly declared candidate for the South Dakota US Senate seat up for election in 2008, state rep. Joel Dykstra (R), said this last year:
I think 'rape and incest' is a buzzword. It's a bit of a throwaway line and not everybody who says that really understands what that means. How are you going to define that?
This question while ridiculous, illuminates why I am against restricting abortions at all. Abortion bans with exceptions for pregnancies caused by rape or incest are very likely to have these exceptions on paper only.
Same goes for exceptions for saving the life of the mother. How do lawmakers really know a woman will die if she is denied an abortion? The only 100% reliable way to know this is to deny her an abortion and see whether she lives or dies.
If she dies then you blame her doctor who was afraid of losing everything. If she lives (even if it was a close call and she is left with huge medical bills she can't pay and a disability that prevents her from being able to work) then you thump your chest about being absolutely pro-life.