John McCain currently enjoys slightly greater support among Republicans than he did two months ago (87% now, 82% in June). In particular, McCain has strengthened his lead among among southern voters and among white evangelical Protestant voters, among whom he now leads Obama by 68% to 24%. In June, McCain’s lead among white evangelicals was slightly smaller (61% to 25%). The candidates, however, remain essentially tied among independents (45% for Obama, 41% for McCain). Read More

Russell Heimlich  is a former web developer at Pew Research Center.