Real simple. Voters placed into office a man in favoring of killing already-born infants. (Is it any wonder our nation is under economic judgment?)
They, de facto, did just that. But if you talk to them, they'll deny that they did, or that he even has this position.
Face it, most were voting for "the cool black guy" and had no idea where he stood on most issues, and just assumed that his views matched theirs.