As one of the best known non-Christians in public life, Penn Jillette is often asked about politicians who exploit their religious beliefs to score political points:
Christian used to be a throwaway word. People didn’t used to use it much. People didn’t start self-labeling or getting labeled Christian until the last part of the 20th century. Before that, you might identify as a Baptist, or a Southern Baptist or a Methodist. But there wasn’t one identifier that put you in a fold with all the other believers.
[. . .]
When I was a kid, politicians wanted to avoid talking about religion if they could. John F. Kennedy couldn’t duck the issue, being Catholic and all. So how did he address it? By reminding Americans that religion shouldn’t be an issue, that he was concentrating on big things like poverty and hunger and leading the space race.
When he finally got around to talking about religion, here’s what he said: “I believe in an America where the separation of church and state is absolute.” Can you imagine a presidential candidate talking that way today?