There are good Christians and bad; good conservatives and bad; good “others” and bad. Mitt Romney’s church label means nothing as far as his fitness for president, just as is true with all the rest. When it comes to a person’s convictions, capacities and credibility, church labels can mean everything and they can mean nothing at all. In fact, in many cases they mean the exact opposite of what we might think. Church labels may even mean two different things at once: Republican Senator Orrin Hatch and Democratic Senator Harry Reid are both members of the Church of Jesus Christ of Latter Day Saints, but they espouse very different political views.
The Founders made it quite clear in the Constitution: There would be no religious test for public office: “no religious test shall ever be required as a qualification to any office or public trust under the United States.” (Article VI) That was supremely wise.
I’ll make a confession to you: I voted for Jimmy Carter in 1976 because he was the “born again” candidate who taught the Bible in his Baptist Sunday school. That was the last time I let a church label mean anything, one way or the other.