Here is a link to a very good piece by Michael New. Here is his concluding paragraph–
“These Gallup data show that the U.S. regime of abortion-on-demand, throughout all nine months of pregnancy, is inconsistent with the attitudes of most Americans. Strong majorities, across a wide range of demographic groups, oppose both second- and third-trimester abortions, and abortion-on-demand does not even have majority support during the first trimester. Over the past 25 years, the pro-life movement has made significant progress in passing a variety of state-level laws to limit late-term abortions. These new polling results should encourage them to keep up the fight.”