I recently heard that Rick Santorum wanted to do away with all birth control / contraception.
(There are no links here to his specific statements, but you only have to Google "Santorum birth control" to see for yourself.)
So, if that is the case, then he MUST be an advocate for abortion:
People are going to have sex, there is no way they won't (and even HE must realize this). And without birth control, eventually most women will get pregnant whether they want to or not. And those that don't want to be pregnant for whatever reason (economic, rape, incest, etc.) will get an abortion, legal or illegal.
So, repeating the third paragraph, if Rick Santorum is so against birth control, then he HAS to be advocating abortion!