James Taranto claims that he knew all about the relationship between white fertility and Republican voting. See, it's the Roe Effect -- future Democrats get aborted, he says.
The only problem with this popular idea is that there's little evidence that abortion has a big effect on white fertility -- a 2000 Rand Corporation study found:
The white TFR where abortion is legal and Medicaid funding for the procedure available is estimated to be 1.81. Ending Medicaid funding would increase the TFR for whites by 2 percent. Klerman estimates that making abortion illegal would increase white fertility by an additional 3 percent, still below replacement levels.
If abortion wasn't convenient, people would have a lot fewer unwanted pregnancies. They really aren't all that hard to avoid.
It makes you wonder what the point of legalized abortion is if the great majority of aborted fetuses wouldn't have been conceived without abortion being legalized.