Neither their sexuality or their religion (or lack thereof) would have any impact on my decision. Of couse I'm not a Christian, so the question wasn't actually addressed to me.
I don't know. I am guessing atheist but that would make me hypocritical because I believe in voting for people who will do the job well, not on their views about religion.
If we were facing a theocracy....then I would vote for the atheist
If we were facing discrimination against homosexuals...I would vote for the gay guy / gal.