There are 20,000 Mormons in Iowa not a lot, but given that almost all of them are expected to support Mitt Romney, they could tip the balance in his favor. Or their support could be canceled out by the effect of the subterranean Mormon-bashing that plays to the fears and prejudices of evangelical protestants who believe Mormonism is a non-Christian cult. Evangelicals have rallied behind Mike Huckabee, who played a role himself in stirring anti-Mormon sentiment (e.g., Not long ago he was quoted asking whether Mormons believe that Jesus and Satan are brothers. They do not.)
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