Well, to answer those questions, I would suggest that you read Faithful Citizenship and consider the words of Bishop Kicanas
Again, I believe that Catholics can interpret the words of Bishop Kicanas and understand his meaning. Let’s review what he says again:
INTERVIEWER: If I’m hearing you correctly, you’re saying that for a Catholic who wants to approach his or her vote in three weeks with the mind of the church, it’s not a slam-dunk which way that vote should go. Is that right?
BISHOP KICANAS: Yes, and I think that’s what “Faithful Citizenship” is saying. As a disciple, as a citizen, you have to weigh issues, you have to consider the character of candidates, what you think they will be able to do in terms of affecting the society and the culture in which we live. Clearly, the document is saying that to vote for someone who is proposing actions that are intrinsically evil, because of their position on those intrinsically evil acts, is certainly problematic for someone who is a believer in Christ. You don’t believe in Christ and then vote for a person simply, or primarily, because they hold a position that’s contrary to the church. You have to take those positions into consideration, and then make a choice. These are never easy choices.