The first Republican presidential candidate was: John C. Fremont.
John C. Fremont was known as the first Republican presidential candidate in the United States of America..
He was the person that created the republican party was was also known as a politician during his life time.
Therefore the first Republican presidential candidate was: John C. Fremont.
Learn more about John C. Fremont here:https://brainly.com/question/983947
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