Could just be statistical noise... Trump had 2 fantastic days on the back end of the Hillary 9/11 disaster... Could just be those extraordinary days rolling off... Look for this to stabilize the next day or two, them resume the upward trajectory...
I wish. But that is not what is going on here.
Count the days from 9/11 when Trump started up in this poll in reaction to the Great Hillary Collapse Caught on Video. This is a 1/7 of about 3000 participants being repeatedly polled once a week. So Day 8 after 9/11 is a polling of roughly the same group that bumped Trump up on 9/11.
We are now in the second day of that cycle and what you see is the 9/11 bump being reversed at about the same rate that it went up. I expect this to continue until we are down to a small Trump margin: The residual and lasting effect of the 9/11 Collapse.
But Monday's Debate will change all of this. One way or another. Interesting times. We need Our Donald to hit a Home Run or two or three in that first debate.