There is no religious litmus test for anyone running for office. At least not one put in place by the government. That is the point of Jefferson’s separation claim: no state run church, no church run state. Now, the populace IS NOT bound to this rule. We can discriminate based on ideology, creed, and anything else we so choose. I am not saying it is right, but it is not the same as the government doing so.
We have laws that say that we cannot refuse service to people based on race, creed, color, country of origin, hadicap, familial status, and more. We have the same laws regarding housing and employment. It would be impossible to impose such a law as far as how we vote. How can you check it? If the issue that you have is the way people make up their minds on a candidate, you should not hold that against the Church. That is each individual’s decision.
The ACLU bothers the hell out of me. They have agendas and DO NOT protect civil rights equally. Please give me one valid reason that, for example, they protect those providing abortions but not the rights of legal protesters? Is there a logical reason that they protect criminals from police but not the innocent from criminal activities of big companies?