Slangily eliminate Republican in company, a noted speaker (6)

I believe the answer is:

cicero

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'speaker' is the definition.
(I know that Cicero is or was a speaker)

I don't understand the remainder of the clue.

(Other definitions for cicero that I've seen before include "Old politician" , "Roman orator and master of prose" , "Marcus Tullius -, Roman consul, orator and writer" , "Roman lawyer" , "wartime spy" .)

I've seen this clue in The Guardian.

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