Most pro-life advocates do not grasp the nature of the legal battle.
Assume for a moment that Casey & Roe are overturned. The outcome STILL depends on the rationale used by the court (now 50 state courts instead of the Fed apparatus), and the end result might be just the same.
For a flavor of the statutory construction route for turning legislative intent and the will of the people on its head, see the Florida Supreme COurt's decisions in the 2000 election and end of life issues, and the Texas parental notification case, which is summarized, with links, at ...
http://www.freerepublic.com/focus/f-news/1507174/posts?page=267#267
My memory says that most of what I've read says the abortion decision will go down to the individual states if it is overruled by SCOTUS at the national level.
One step at a time.