[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/images/09/18/art.obama.gi.jpg caption="Obama is gaining in national polls."]
(CNN) - Barack Obama appears to be regaining his summer edge over John McCain according to the latest CNN poll of polls, which shows a swing of four points in the Illinois senator's favor in just over a week.
With less than seven weeks remaining until voters weigh in at the polls, Obama now holds a 2 point lead over McCain (47 percent to 45 percent), according to CNN's average of several recent national polls. Eight percent still remain undecided.
The latest polls also suggest Obama again holds the slim but clear advantage he held in August before both parties' conventions - one month ago, Obama held the same 2 point margin over McCain.
Election Center: Track CNN's poll of polls
The Illinois senator increased that lead following his own convention, but saw it disappear entirely after McCain tapped Sarah Palin as his running mate and Republicans emerged energized from their convention in early September: In a CNN poll of polls taken 10 days ago, The McCain-Palin ticket held a 2 point advantage over its Democratic counterpart.
The poll of polls consists of six recent surveys: CBS/NYT (September 12-16), Quinnipiac (September 11-16), IPSOS-McClatchy (September 11-15), Gallup (September 14-16), Diageo/Hotline (September 14-16), and American Research Group (September 13-15).
It does not have a sampling error.