Exit polls are surveys, not vote counts: how they work and where they strain

Summary
How exit polls work, from precinct sampling to reweighting, and what notable elections in the U.S., U.K. and Ukraine show about their limits
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Exit polls are surveys, not vote counts: how they work and where they strain
How exit polls work, from precinct sampling to reweighting, and what notable elections in the U.S., U.K. and Ukraine show about their limits
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