1 in 5 Americans Would Not Vote for Mormon President

Nearly one in five Americans say they would not vote for a Mormon president, a percentage that has hardly budged since 1967, according to a new Gallup poll.

It is unclear how the anti-Mormon bias will affect Mitt Romney, the presumed GOP presidential nominee, Gallup said, since just 57 percent of Americans know that he is a member of the Church of Jesus Christ of Latter-day Saints.

“This suggests the possibility that as Romney's faith becomes better known this summer and fall, it could become more of a negative factor,” Gallup writes, “given that those who resist the idea of a Mormon president will in theory become more likely to realize that Romney is a Mormon as the campaign unfolds.”