Polsters do not call random people. They will call as many people under 30 as they have to to get a representative sample. They have quotas for different parties, age groups, races, etc. And purposefully target the ones they want and verify with the person that demographic info is right while doing the questions. Atleast good scientific polls will do this. Not all polls are created equal.
Polsters do not call random people. They will call as many people under 30 as they have to to get a representative sample. They have quotas for different parties, age groups, races, etc. And purposefully target the ones they want and verify with the person that demographic info is right while doing the questions. Atleast good scientific polls will do this. Not all polls are created equal.