You are entitled to your opinions but not to your own facts. Romney is not 'pro-abortion', he VETOED a bill that extended stem cell funding.
See:
http://www.freerepublic.com/~unmarkedpackage/#abortion
For all the concerns about religion, remember that being a Chritian doesnt make you cosnervative or a good President. E.g., born-again baptist Jimmy Carter was/is a complete leftist, and even Clinton went to church. (Whether the Clinton's worship anyone but themselves for real is an exercise for the reader.)
Mitt's position right now is that he supports Embryonic stem cell research. That research requires that embryos are killed to retrieve their stem cells.
Do you believe that is abortion? Mitt supports stem cell research.