Although the religious background and affiliation of Presidential candidates appears to be less important to Americans now than it was in 2008 and 2004*, 18% of voters report that religion is "important or very important" to their selection process. Here's a breakdown of the candidates by religion:
Barack Obama has been a life-long member of the United Church of Christ. He briefly attended a Unitarian Universalist Church while living with his grandparents in Hawaii and now regularly attends, but is not a member of a Washington DC area church.
Michelle Bachman was raised in the Lutheran Church and for many years attended a Wisconsin Evangelical Lutheran Synod Church in Stillwater, Minnesota. She is currently a member of the Eagle Brook Church, an evangelical Protestant mega church located near St. Paul, Minnesota.
Herman Cain is a lifelong Baptist and grew up in the Antioch Baptist Church North in Atlanta, Georgia. That congregation is a member of the National Baptist Convention USA, Inc.
Newt Gingrich was raised as a Lutheran but became a Southern Baptist during his years as a graduate student at Tulane University. In 2009 he became a Roman Catholic convert.
Jon Huntsman, Junior was raised in the Church of Jesus Christ Latter-Day Saints and is a 9th generation Mormon.
Ron Paul was raised as a Lutheran but attended an Episcopal Church where each of his five children was baptized. He and his wife now attend the First Baptist Church in Jackson, Texas.
Rick Perry was raised in the United Methodist Church. He and his wife currently attend Lake Hills Church, a nondenominational evangelical mega church located in Austin, Texas.
Mitt Romney is a 5th generation member of the Church of Jesus Christ Latter-Day Saints and briefly served as an LDS Bishop of the Belmont, MA ward (congregation).
Rick Santorum is a lifelong Roman Catholic and is a member of Saint Catherine of Siena Catholic Church in Great falls, Va.
*Pew Forum on Religion and Public Life.