E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Spellbinders.
Orators who hold their audience spellbound. The word came into use in America in the presidential election of 1888.
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The Hon. Daniel Dougherty says: The proudest day of his life was when he beheld his name among the spell-binders who held the audience in rapture with their eloquence.Liberty Review, July 7th, 1894, p. 13.