It's not every Sunday that the image of a major presidential candidate dwarfs the pulpit of a simple country church in southern Minnesota, but this was no ordinary sermon at Grace Christian Church in Albert Lea.
With 37 days to go before the election, the Rev. George Marin was taking part in a special calling, one shared by dozens of pastors across the nation, to preach what he sees as a biblical basis for voting.
So last Sunday, during a service that featured 50 rapturous congregants speaking in tongues, a YouTube video of Barack Obama appeared on a large overhead projection screen. In the video Obama told the Rev. Rick Warren in California that the question of when life begins is "above my pay grade."
"This does not fly," Marin bellowed into a wireless microphone. Castigating the Democratic candidate's abortion-rights stand, Marin exhorted his followers amid shouts and applause: "I am calling on you to reject this man as the next president of the United States."
Sermons like Marin's are a sign of growing fervor among Christian conservatives who see this year's presidential election as a watershed moment for their participation in political life.
Energized by Sarah Palin's selection as John McCain's running mate on the Republican ticket, voters across the nation who oppose abortion are rallying their forces in ways that sometimes challenge conventional strictures on the role of pastors and religion in public life.
In Minnesota, groups such as the Minnesota Family Council are trying to reach 400,000 to 500,000 voters -- potentially a sixth of the state's electorate -- with overtly Christian appeals that define support for "pro-family" candidates as a moral obligation.
"The bottom line is, we want people of faith to get out and vote their biblical values," says Chuck Darrell, the group's spokesman. "If they get out and vote, it's going to have an effect."