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Does anyone know how they get the national results? Is it a completely separate poll or do they just take the state polls, weight them by the number of voters in each state, and use that to come up with national figures? The reason I ask is that there are questions on the national poll that are not found on the individual state polls. Specifically, I wanted to see how states that had "marriage protection" issues on the ballot compared to nearby states that did not have such issues. That question is on the national poll but I don't see it on the state polls. Perhaps they ask only a subset of respondents that question and it is not a high enough number to extrapolate to states, but nationwide it is enough to extrapolate for the whole country?
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