That underrepresentation may be about to change with a record number of women—and Republican women—running.
He wrote his Master's thesis on the underrepresentation of young people in Congress.
c.1400, "image, likeness," from Old French representacion (14c.) and directly from Latin representationem (nominative representatio), noun of action from past participle stem of repraesentare (see represent). Meaning "statement made in regard to some matter" is from 1670s. Legislative sense first attested 1769.