In 1961, after John F. Kennedy's Catholic faith proved not to be an insurmountable barrier to the White House, Billy Graham predicted that religion would never again be such a divisive force in elections.

The evangelist could not have anticipated YouTube, 24-hour news cycles and a roster of candidates featuring a Mormon, an African-American Protestant and someone raised in a Pentecostal church.

The intersection of religion and politics has endured its share of head-on collisions during the 2008 campaign — most involving candidates' religious resumes or those of people in their circles.

With a few exceptions, whatever seemed odd or fringe trumped serious discussion about how candidates' religious beliefs shape their approach to governance.

As the race nears its end, scholars and religious leaders are using terms like "new low" and "embarrassing" to describe how religious beliefs were distorted and picked over, while candidates were asked to mount theological defenses for their respective faiths or be held accountable for the views of others.

"Religion is reduced to the exotic or to morality bumper stickers, or just a trump card for identity politics," said Eric Gregory, an assistant professor of religion at Princeton University. "The focus becomes buzzwords or personal piety rather than the way religion impacts issues."

While campaign attacks involving religion go way back — Thomas Jefferson was accused of atheism and William Howard Taft came under fire for being a Unitarian — not since Kennedy's Catholicism was dissected has religion been so used as a weapon in an election.

Democrat Barack Obama has talked of bridging religious divides, and his campaign sought to reach out to religious voters on a scale unprecedented for a Democrat. Yet Obama's ability to speak more openly about religion in the public square was compromised by echoes of former pastor Jeremiah Wright thundering "God Damn America" in clips that dominated cable television for weeks last spring.

Obama finally cut ties with Wright, and the pastor's rhetoric receded from view — until this week, when it reappeared in TV ads produced by an independent Republican group.

Wright is fair game, critics of Obama and some neutral observers say, because the pastor and politician were clearly close and Obama did not leave the church until Wright forced his hand.