I’m not Catholic but whenever I see a “You can’t be Catholic and pro-choice” bumper sticker, I nod in agreement. I’m also not Jewish, but maybe someone needs to create a “You can’t be a Rabbi and vote for Obama” bumper sticker.
I have one of those ‘you can’t be both Catholic and pro-choice’ stickers (they make them with the word ‘Christian’ as well). No negative reactions so far, but I live in a red area anyway...