According to the survey, the lack of a bounce is "consistent with Gallup's immediate post-GOP convention reaction poll, showing Americans giving Romney's acceptance speech, and the convention more generally, rather muted ratings."
Moreover, Gallup's seven-day average of presidential preferences shows that Mr. Obama has held steady at 47 percent to Romney's 46 percent every day since August 29.
"That is a slight shift in Obama's favor, as Romney held a consistent two-percentage-point advantage for nine days in mid-August, shortly after announcing Paul Ryan as his vice presidential running mate," writes Gallup's Jeffrey Jones. "That was the longest period in Gallup Daily tracking showing Romney with any kind of edge."