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.