Chris Christie indeed is Roman Catholic, and indeed is pro-life; unfortunately, the fact that a politician, even a Republican, is Catholic does not, by itself, guarantee that such politician is pro-life. The last two Catholics on presidential tickets—Joe Biden and John Kerry—are both pro-abortion, as are Catholic Republicans such as Rudy Giuliani, Tom Ridge, Arnold Schwarzenegger and Susan Collins.
Also do not shoot me, but a person can also be a very good Catholic and still not be a Christian.
Same deal for any denomination. In fact many so called Christian Churches in America, the Minister has not received Christ.
A denomination will not save you, only a personal relationship with Christ.
We know that Sarah Palin is a Christian, we do not know that Christie is.