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    Can polls be trusted?

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Can polls be trusted?

LA Times' David Lauter on why its poll is often more pro-Trump than most, and statistics Prof. Andrew Gelman on why polls' margin of error is often wrong.

Can polls be trusted?

LA Times' David Lauter on why its poll is often more pro-Trump than most, and statistics Prof. Andrew Gelman on why polls' margin of error is often wrong.