Tracking Poll Update: Obama +7
September 30, 2008 by Kevin Van Dyke, Editor · Leave a Comment
Today’s tracking polls are important in that they are the first tracking polls to include only interviews conducted after the first debate on Friday.
9/30:
Gallup Daily: O+6
Rasmussen: O+6
Diageo/Hotline: O+6
Research 2000: O+10
Simple Average– O+7
Adjusted Average– O+6
Notice that today, for the first time, three out of the four tracking polls have exactly the same Obama advantage of +6, and therefore the adjusted average (excluding outlier trackers) of Obama +6 is a full percentage point different from the simple average of Obama +7. However, regardless of whether Obama’s lead is 6 or 7, trends have been moving wildly in his favor recently:
9/25: O+3.25
9/26: O+5
9/27: O+5.5
9/28: O+6.5
9/29: O+6.75
9/30: O+7
It is unclear how much of this movement is the result of the first debate, McCain suspending his campaign, and/or the crash of the financial markets. My guess is that the latter is having the most effect, but the other two factors are indeed interacting with this to create such a precipitous decline for Senator McCain.
In fact, for the first time, Pollster.com’s regressions shows a statistically significant 5 percent point lead for Obama with 95% confidence.
Here’s a look at the trends:
Trends:
Simple Average
9/8:M +2.0
9/9:M +2.0–Height of McCain’s convention bounce
9/10: M +1.4
9/11: M + 1.0
9/12 :M +1.0
9/13: M+1.5
9/14: M +0.25
9/15: Tied—Bounce is naturally fading back to a tied race
9/16: O +1.25
9/17: O+2
9/18: O+3.5—First tracking polls to include financial meltdown numbers
9/19: O+3.25
9/20: O+4
9/21: O+3.25
9/22: O+4—Race appears to be stable for the time being.
9/23: O+3.25
9/24: O+3.75
9/25: O+3.25
9/26: O+5–Stability ends. Majority of sample comes after McCain’s “suspends campaign.”
9/27: O+5.5—Complete sample comes from after McCain “suspends campaign.”
9/28: O+6.5
9/29: O+6.75
9/30: O+7–Complete sample comes from after the first debate.






