The orignal post was incredibly incomplete and biased. The blogger later posted an update...the actual text of the proposed bill reads quite differently, and sounds a lot more reasonable in context.
So the sensationalist headline is not only wrong, it is also completely backwards! The bill does not compel a woman to carry a fetus that came about as result of rape or incest. Instead, the bill says that anyone (other than the mother, presumably!) who aborts the fetus in an attempt to make the fetus unavailable for DNA testing is guilty of tampering with evidence.
Presumably, once the testing is done, the woman can then proceed to expel the unwanted cluster of cells from her uterus.
So it sounds here like the &$$hole is the blogger, not the legislator.
PS though the article doesn't make it clear, it sounds like the legislator is a woman as well.