You base your post on the assertion that what the pollster said about “that’s how he found it” is true. I don’t agree with that assertion.
Used to work with a very bright woman who was convinced that half the people in America were black and half were white, and there were just a handful of others.
A review of the Census was not enough to convince her otherwise ~ she wanted it half and half, and that was the end of that.
So, you do know there are, in general, more Democrats than Republicans, right?