Walker and Rubio are taking the GOP presidential contest to historic extremes on abortion

Kristin Luker quoted in Business Insider, August 12, 2015

It wasn’t until around 1980, Luker said, that “abortion really became a litmus test” for the GOP. In part because of civil rights and in part because of abortion, she noted, “well-off intellectuals began migrating to the Democratic party,” creating a feedback loop that drove Republicans further to the right on reproductive issues.