The challenge is local, state, and national Republicans, then cannot be on opposite sides of the issues, otherwise a pro-life Republican at local and state must give up or change views to run nationally.
I think where we are headed in the near term is that politicians will state their personal belief that life begins at conception and that the only exceptions should be for rape, incest, or to save the life of the mother.
However, they will support the will of the majority of the citizens they represent currently by voting for what the majority currently believe the line should be drawn while also working diligently to move that line to be in line with their personal beliefs.
There are no states where banning abortion completely is politically possible. We need to work on making the case against abortion, not trying to pass laws that will only result in more LIBERAL laws being passed in reaction!