Reply #3: The usefulness of polling 508, 10000 or 12 is objectively determinable

[Kurt_and_Hunter]

The math tells us precisely how useful a sample of 508 is, so there's no need to guess.


For results based on the total sample of national adults, one can say with 95% confidence that the margin of sampling error is ±3 percentage points.

For results based on the sample of 430 Republicans or Republican leaners, the maximum margin of sampling error is ±5 percentage points.

For results based on the sample of 508 Democrats or Democratic leaners, the maximum margin of sampling error is ±5 percentage points.