So... abortion, laws, and legislating morality, religion are all tough subjects to try to tackle on the internet, and honestly I 'try' to keep my beliefs on things out of the discussion most of the time because usually that just leads to trying to argue about my religion, and (the royal) your beliefs and I tend to think it doesn't get us anywhere. This is going to be a really long post though so I apologize in advance.
When I was an atheist I took that stance that all laws are in one way or another legislating morality, and that morality is really subjective what you consider immoral is different then me and vice versa. In darwinism it’s the weak die the strong survive, friedrich nietzsche struggled with this as well (he was a darwinist theologian) and as an atheist I believed there really should be no laws after all were just carbon we live we die our make up and importance to the universe is essentially nothing so what if Im raped or murdered. Anyways thats kind of a long winded way to say that my thoughts have changed on that, but I still think someone who really, really wants to argue against “legislating morality” as an atheist still has some hills to climb themselves.
As a Christian my stance has kind of changed, there are things we have laws for that while yes are still pushing one word view or another there are laws we need to function as a society. Laws on homocide is the “big” one that comes up frequently. If I were to say that I think in, “Gods” eyes abortion is a sin, I would say probably at least mid-late term ones, but I don't know. However bigger than that to me is that while we can never get around how we vote is our way of pushing our world views on others I dont think its the place of Christians to tell non-christians how they must live by our moral standards. If a woman decides shes going to have an abortion I dont think its our job at least right now to judge them, or to punish them for it. I personally am squeamish about late term abortions but even to some extent it really isnt on me and my “feelings” dont really constitute a good argument for voting against someone else’s feelings.
I think Jesus’ life showed an example of how we should live and really he spoke a lot about religious people using the law to burden down and to gain power over people, and how they were really the evil ones, and I still feel like thats the case, religious people running around saying, “burn the gays, or abortion doctors or ladies getting abortions should rot in Hell”, are really the evil ones, because they’re trying to use their laws to trample others. I believe I guess to wrap this up that Christians have basically two “jobs”, First love people regardless of life styles, and secondly to worry about your own sins and let God worry about others. If there is a God he’s got greater answers to all these questions then I do, so to me a Christian who’s wrapped up running the life of someone else (ESPECIALLY if they dont believe in what we/I do to begin with) is failing to understand their responsibility is to love people not to tell them how terrible they are.