Didn't know that. More than I thought. Looked it up for the most recent stat:
"While the number of abortions decreased among most subgroups of women except women who were poor, cohabiting, ages 20 to 24 or non-Hispanic African Americans. That means 30 percent of women (effectively, one in three) will have an abortion by age 45, if the 2008 abortion rate prevailed. - Sep 30, 2015"
So they decrease their guilt by voting democrat? Lots of potential dynamics there. .