So can a Catholic in good conscience vote for a pro-choice candidate? The answer is: I can’t, and I won’t. But I do know some serious Catholics — people whom I admire — who may. I think their reasoning is mistaken, but at least they sincerely struggle with the abortion issue, and it causes them real pain. And most important: They don’t keep quiet about it; they don’t give up; they keep lobbying their party and their representatives to change their pro-abortion views and protect the unborn. Catholics can vote for pro-choice candidates if they vote for them despite — not because of — their pro-choice views. And they also need a proportionate reason to justify it.
What is a proportionate reason when it comes to abortion? It’s the kind of reason we will be able to explain, with a clean heart, to the victims of abortion when we meet them in the next life — which we certainly will. If we’re confident that these victims will accept our motives, then we can proceed.
Archbishop Charles Chaput, O.F.M. CAP