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the greatest danger in this process would be faulty selection of the sample, rather than just the number of people contacted.

I think this is why they seldom go much over 1000. Using the tool, I can see that polling 2000 persons would drive the MOE down to close to 2%. That seems worthwhile, but the other flaws (as you suggest) would remain, so the actually precision would not increase much.

Anyway, techniques aside, do you believe the results of this poll?

Well, yes, but they are measuring a very ephemeral phenomenon. I can say (as I did) "Romney won the debate" but I still know his ideas are BS. It is a throwaway judgement that has no effect on who I will vote for.

BTW, I hate robo calls but I always respond to the polls. A small show of support for Obama and the Virginia Dems.

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