If he respects the law, I assume he also respects current law regarding abortion as determined by the Supreme Court of the United States regarding abortion, i. e., Roe vs. Wade.
GOVERNOR ROMNEY: "I am pro-life. I believe that abortion is the wrong choice except in cases of incest, rape, and to save the life of the mother. I wish the people of America agreed, and that the laws of our nation could reflect that view. But while the nation remains so divided over abortion, I believe that the states, through the democratic process, should determine their own abortion laws and not have them dictated by judicial mandate." (Governor Mitt Romney, Boston Globe, Op-Ed, 7/26/05)
So what about Judges?
GOVERNOR ROMNEY: "If a judge substitutes his or her values for those values that were placed in the constitution, they do so at great peril to the culture of our entire land." (Scott Helman, "Romney Rips SJC's Justices On Values," The Boston Globe, 11/11/05)
Now you can say he didn't fight hard enough, and he could have, should have, would have done x, y, z but what are our options here. The Democrats gleefully support abortion on demand. At least Romney has the right ideas about effecting real change, and will advance the right to life movement.
His position, as stated now, are in my opinion reasonable and right minded. I do not think his past is perfect, but I am not willing to throw my vote away over this issue.