Right out of the gate comes Tim Saler, a data consultant for Mr. Trump’s campaign, who takes issue with the latest CBS News/YouGov poll showing Ms. Harris ahead of Mr. Trump by one point nationally and running very close to Mr. Trump in the key battleground states. Without this manipulation, President Trump would be maintaining a 51-49 lead in their Aug. 4 survey. As a result, we adjust our data to align with known benchmarks, a process known as weighting. Weighting a survey by factors like age and race is quite standard and is a basic matter of good research practice. Pollsters have robust and friendly debates over the best ways to keep a poll from over- or under-sampling people of a certain party.

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Persons: Kamala Harris, Donald Trump, Tim Saler, Trump’s, Harris, Trump, Vance, Saler, let’s, “, Brian Hughes Organizations: CBS, Trump, New York Times, Siena College