Reagan dithered a long time before he signed the bill, which would seem to indicate that, while not "pro-abortion", he certainly didn't hold a non-negotiable, pro-life position. Abortion was only just appearing on the horizon as a national issue at this time and Reagan was a new governor. These two factors can be counted in his favor, as he was undoubtedly swayed by the "life of the mother" arguments.
Two million abortions resulted from his signature on that bill and even the bill's author said he was surprised by the liberal way in which it was interpreted.
As a result, Reagan had what could perhaps best be called an "awakening", rather than a "change of heart" and he lamented signing the bill. He subsequently espoused a pro-life position for the rest of his life. Whether he considered life issues, including abortion, to be the major issues facing America, is another question, however.
In general, the Republican contribution to the sharp end of the abortion conflict has been less than stellar, especially when it comes to nominating Supreme Court justices.
It is a lie when these romneybots parrot Mitt Romney's attacks on Reagan by saying he was pro-abortion.
Romney has been claiming and spreading a new history that Reagan was "adamantly pro-choice".
Back then we didn't even use the language of "pro-life", pro-choice" and we trusted doctors and "substantial health" and the requirement of a medical committee, sounded legitimate.
I have a bracelet (sort of like the POW-MIA bracelets) that I bought at a Catholic Daughters' convention that I vowed to wear until Roe v Wade was overturned. I confess that I got tired of wearing it every day. I think it's time to get it out again -- at least on Sundays.