What's the consensus in the US about Trump? What if you sample just the Democratic debate audience? What if you sample just a Trump rally? Even at 90% you kn

What's the consensus in the US about Trump? What if you sample just the Democratic debate audience? What if you sample just a Trump rally? Even at 90% you know very little without something close enough to a representative sample. It's true that it's a strong enough signal that it's not accounted for by small biases.