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It doesn't really matter when it was taken - it doesn't mean they got the sample correct. For example, if you want to get a feel for how the electorate as a whole feels and you poll 1,000 white, male voters on election day - your sample is flawed from the start.You have to account for what the turnout actually is. It is X% male, X% female, X% white, X% black, X% hispanic etc etc.Just polling "voters" doesn't mean you have a good sample - because subsets of voters have very different opinions and you have to account for that in your sample to get an accurate read. Good pollsters do this - bad ones do not.
It doesn't really matter when it was taken - it doesn't mean they got the sample correct. For example, if you want to get a feel for how the electorate as a whole feels and you poll 1,000 white, male voters on election day - your sample is flawed from the start.
You have to account for what the turnout actually is. It is X% male, X% female, X% white, X% black, X% hispanic etc etc.
Just polling "voters" doesn't mean you have a good sample - because subsets of voters have very different opinions and you have to account for that in your sample to get an accurate read. Good pollsters do this - bad ones do not.
