18 and Registered to vote
Usually, you have to be a registered voter and live in the area where the survey is being conducted. If the survey is of voters in California, for example, you must live in California. This is why we ask in what state you live when calling on a cellphone -- to make sure you still live in the target area, as some people will not have their cellphone number changed when they move out of the area where the service was initially established.
Yes, 18 and/or a registered voter
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