Following up the candidates' appearances at Saddleback Church last Saturday, Gallup reports that John McCain continues to enjoy a 43 percent to 37 percent lead among registered voters who attend church weekly, according to a survey conducted Aug. 11-17. McCain has a smaller 47 percent to 43 percent edge among those who attend nearly weekly or monthly, while Obama leads 54 percent to 34 percent among those who say they seldom or never attend. The differences are even sharper when the sample is limited to whites, with McCain holding a 64 percent to 25 percent lead among weekly churchgoers and a 56 percent to 34 percent lead among those who attend nearly weekly or monthly. Obama's margin among white non-churchgoers at 48 percent to 39 percent is smaller than his overall figure.