@LouisIngenthron To be clear political polls generally arent conducted through cold calling. But there is a legitimate problem in any survey in science where we expect it to be biased by peoples willigness to take the poll. It is one reason data scientists treat polls more critically than many other forms of data.

@LouisIngenthron "People that would buy a washing machine on the phone have this opinion: ..."

Wonderful.

@LouisIngenthron Also, they are often very subjective and biased. ;)