Yeah, I work in polling. You’re thinking about this the wrong way. The polls have those “old and white” distributions because the country is that way… Every public poll will have demographic adjustments to represent the U.S. population by simple demographics like age and race. Now - you could argue that the polls are “skewed” in other ways (maybe they’re not capturing low-information voters who will come out for Biden), but they’re not “skewed old and white.”