Trump one week, Biden the next: what do presidential polls teach us?
The Guardian -

Even with the potential for error and a decline in voter engagement, polls can explain the electorate at a point in timeIn recent months, polling has generally showed President Joe Biden running behind his Republican challenger, Donald Trump, by a small margin, particularly in swing states like Georgia and Arizona. But election polling began to fluctuate after Biden’s State of the Union speech last month.The question is how much meaning observers should ascribe to polls in April, seven months...

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