The conventional wisdom is that abortion is a losing issue for the GOP in presidential races. Republican presidential candidates need to be pro-life in order to shore up their base, but their pro-life position alienates swing constituencies. So the best thing to do is downplay the issue as much as they can — talk about the economy or tax cuts or terrorism or whatever — and cross their fingers. This is to be expected from political observers, since they overwhelmingly come from the media/commentariat class, which is overwhelmingly socially liberal.