President Obama is a Christian (despite the fact that most Republicans apparently still believe that his “deep down” beliefs are Muslim, according to one poll conducted last year.)

In fact, according to the Public Religion Research Institute, there have only been four “religiously unaffiliated heads of state in American history,” the last being Rutherford B. Hayes, who left office in 1881. This, however, does not mean that they did not believe in God.

Perhaps the most famous unaffiliated president was Abraham Lincoln, who wrote in 1846:

“That I am not a member of any Christian Church, is true; but I have never denied the truth of the Scriptures; and I have never spoken with intentional disrespect of religion in general, or of any denomination of Christians in particular.”

Now it is almost unconscionable to think of a president who didn’t believe in God. In fact, a poll last year by the Pew Research Center found that not believing in God was the most negative trait a presidential candidate could have among a variety of options, even more negative than having an extramarital affair.