I'm a traditional leftist/tax-and-spend liberal but anti-abortion. It could be my catholic upbringing, but it just seems incredibly obvious to me, a "you must be this rational to ride" line, that killing the same entity inside someone else is just as bad as killing it outside.

(Pro-abortion is coherent if you are pro-infanticide - really pro it, not just the "lol yeah delicious babies" kind we sometimes see on LW. And there's a coherent position of "the line needs to be somewhere and birth is the Schnelling point, so I'm contingently pro-abortion but anti-infanticide, pro tem". But I don't think many pro-abortion folk would endorse that position. )