Gallup Daily: Obama 47%, McCain 45%

Now Obama is back in the lead by 2 points, although it's still statistically a tie since this is within the margin of error of the poll.

"The Sept. 14-16 Gallup Poll Daily tracking update shows Barack Obama regaining a slight, although not statistically significant, edge over John McCain, 47% to 45%, among registered voters, marking the first time since the week of the Republican National Convention that McCain has not held at least a one percentage point margin over Obama." Gallup Daily: Obama 47%, McCain 45%