All 5 Uses

republic
in
The Autobiography of Miss Jane Pittman
(Edited)

Most of the talk was about the Federal Gov'ment—'specially the Republican Party It was the Republicans that had freed us, and it was the Republicans that had the Freedom Beero there to look after us.
Chpt 2
They wanted us to vote —and vote Republican.
Chpt 2
The nigger Democrat said, "I rather be a Democrat with a tail than a Republican that ain't had no brains."
Chpt 2
The Democrats said that was strange coming from a Republican when a dirty scalawag had one of the biggest plantations in the parish.
Chpt 2 *
Bone was important in the Republican Party and he always had soldiers out there guarding his place.
Chpt 2

Definitions:

(1) (republic as in: the country is a republic)
of a system of government in which a majority of citizens elect representatives to make laws; or someone in favor of such a form of government
(2) (meaning too common or too rare to warrant focus)
As a proper noun, the word form Republican is commonly used to describe one of the major U.S. political parties. It is and has been used by many other organizations such as The Irish Republican Army.