Gallup has a terrific new survey out on the religious attendance gap–God Gap if you will–among non-Hispanic white registered voters in re: presidential preference. In a nutshell, McCain is rocking along at a better than 2-1 clip among those who say they attend worship at least weekly (33 percent), while Obama enjoys a 12 percentage point lead among those who attend seldom or never (47 percent). These margins are almost identical to the margins between Bush and Kerry in 2004. But there’s a shift in the swing group of those who say they attend monthly or nearly weekly (19 percent). Where Bush led Kerry among them by 62 percent to 36 percent, Obama has cut the gap down by two-thirds, pulling to within 9 points of McCain, 41-50. That’s where Obama’s religious outreach is making its mark, for a pickup of 5 points in the entire non-Hispanic white electorate.