(RELIGION.BLOGS.CNN) — President Barack Obama’s victory relied largely on two dramatically different religious coalitions – minority Christians and those with no religion – according to a survey released Thursday.

“This presidential election is the last in which a white Christian strategy will be considered a plausible path to victory,” said Robert P. Jones, CEO of the Public Religion Research Institute, which conducted the survey. “The American religious and ethnic landscape is becoming increasingly diverse, and any campaigns relying on outdated maps are destined to lose their way.”

One-in-four Obama voters were religiously unaffiliated, the second-largest “religious” demographic in the president’s coalition, according to the study (PDF). Minority Christians – consisting of black, Asian, Hispanic and mixed-race Americans – made up 31% of Obama’s coalition, the largest religious group.

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