The Gallup Pole’s new numbers have shown that at least half of all Americans, which includes, Republicans, Democrats, and Independents, are pro-life. This does not mean that 50% of all Americans think that abortion should be illegal, but that enough of them think that abortion is immoral enough to call themselves as pro-life. This suggests that the pro-life movement has gone from fringe to mainstream. It may not be too long before enough Americans view abortion as immoral so that it becomes a restricted practice, and is permissible only under particular circumstances.
See Wesley J Smith’s article about it here.