Trump has Paid for Many of the Swing State Polls used by 538

[Botany]

27. Good polling has:

A good random sample of a population
The sample has to be large enough to get the most of the different opinions of the population
you may not get every opinion in that population if those opinions are really a small part of
the population
Questions by the pollster should not be of a nature to sway the person be asked the questions
opinion
The data gathered by the pollsters should undergo a quality statistical analysis
Changes in technology, lifestyles, and people’s attitudes has changed on getting good samples
And remember even a good poll is just a snap shot in time.

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Many of the polls being pushed now have agendas