But there was another element to the debate that has aroused more controversy . David Gergen : Two polls in two weeks have transformed presidential race . Gergen says the polls have changed , partisans on both sides are fired up . CNN poll gave a slight edge to Paul Ryan ; Gergen says he had focused on style . Gergen : Tuesday 's town hall meeting looks increasingly important .
David Gergen : Two polls in two weeks have transformed presidential race . Gergen says the polls have changed , partisans on both sides are fired up . CNN poll gave a slight edge to Paul Ryan ; Gergen says he had focused on style . Gergen : Tuesday 's town hall meeting looks increasingly important .