What the Fallacy?!
Hasty Generalization
The Definition
Drawing a broad political conclusion based on a tiny sample of voters or events.
The Explanation
Pundits often extrapolate the mood of the entire country based on a few interviews in a diner, leading to terribly inaccurate political forecasts.
Political Example
After interviewing three angry voters in a specific rural county, the analyst declared on national television that the entire working class had abandoned the incumbent party.