Moral issues cannot be the bedrock of one's faith or political belief IF "moral issues" are trivialized to mean issues about sex and sexuality, as they so often are by "moralists" on all sides. 

I take it--correct me if I'm wrong--you do not see health care, civil rights, the penal system, sexism, wages, privacy, education, and the environment as moral issues. 

Yes, abortion is--and should be--a moral issue. But, to me at least, it gets lost in
petty, bigoted, puritanical squabbles about who, how, when, how often,  and where people make love. 

We downgrade real moral issues when we put them in the same basket as things that don't come close to their "moral equivalence."   And I think both  liberals and conservatives are at fault when, like you do above, they boast: "We vote on moral issues." Really?