A new poll released Monday from the Public Religion Research Institute finds that Americans who are less religious are less likely to head to the polls this election season, the Christian Post reports. Religiously affiliated Americans are more likely to vote than those who are religiously unaffiliated or less religious, by a margin of 73 to 61 percent, the survey found. If these findings are true, it could spell troubling news for the Obama campaign, since voters who are less religious are also more likely to support the president. Americans who identify themselves as religiously unaffiliated -- now 19 percent of the population -- are the fastest-growing group in America's religious landscape. Obama holds a substantial lead among the religiously unaffiliated -- 73 percent of those polled, compared to only 23 percent of that group who say they support Mitt Romney. The latest Real Clear Politics average of national polls shows Romney with a narrow lead over Obama, 47.7 to 46.9 percent.