How To Read A Poll: Part X
The NBC/WSJ Poll that has Obama leading McCain 47-41, also has a lesson in reading a poll. Let's look at this excerpt from the poll:
Twenty-two percent say that adding Clinton as Obama’s vice presidential running mate makes them more likely to vote for Obama in November; 21 percent say it makes them less likely to vote for him; and 55 percent say it makes no difference.
Hmmm. That does not sound very good. Sounds like Clinton is a wash at best. Ahh, but let's learn about how to read a poll. What is the real effect?
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