A demagogue. Sydney Smith in 1802 uses the phrase “rabble-rousing words.” (N.E.D.)

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1843.  Nothing surpasses the munificent promises and at the same time the external and grovelling humility of a genuine rabblerouser, just before an election.—B. R. Hall (‘Robert Carlton’), ‘The New Purchase,’ i. 211.

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a. 1905.  (Arkansas.) ‘Dialect Notes,’ iii. 152.

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