LEAKED CLINTON INTERNAL DOCUMENT: Discourage Trump Supporters with Bogus Polls
LEAKED CLINTON INTERNAL DOCUMENT: Discourage Trump Supporters with Bogus Polls
Once again, much ado about nothing.
1) He's clearly talking about internal polls which all campaigns have.
2) Oversampling is a pretty common part of polling, one that get used regularly as to compensate for a larger margin of error for subgroups with a small amount of people. You read an explanation of the purpose here. http://www.pewresearch.org/methodology/u-s-survey-research/sampling/