the reason it's called a "bounce" is because it goes up and then it goes down. both candidates got a post-convention bounce and both of those bounces seem to be over now.
despite all the triumphalism and/or panic by both sides over the past month, we're basically where we were when i last posted about the gallup tracking poll on august 19th. if there's a game changer in this race, it simply hasn't happened yet.