No one has suggested anything of the kind.
If politicians are going to toe the line of their religion, then their religion must become a part of the political campaign.
You're weird. Many, even most, politicians feature their religious faith in their campaigns. But I think you're suggesting that anyone who actually believes the teachings of their religion should be regarded with extreme skepticism. That's anti-religious bigotry. Nice that you're honest about it. But it's scary.
No, I'm not weird. I try to be an informed voter. If Candidate A says "I'm a good Catholic and will follow the precepts of my religion," then even if he does not run on a platform of anti-contraception I'd have to assume that he'd be anti-contraception anyway. It is not anti-religious bigotry to make that connection and vote one way or another depending on what the candidate's beliefs, whether specifically enunciated or implicit in his faith.
If you are in favor of a strong national defense and one candidate is a devout Quaker, isn't that going to affect your voting even if that candidate never directly refers to war in his campaign, based on the fact that Quakers are pacifists?