Robert L. Gavin holds a bachelor's degree from the University of North Carolina at Chapel Hill and completed his legal education at the University of North Carolina School of Law. He established a timber business early in his career and later served in the United States Army during World War II. Gavin transitioned to a legal career, becoming an Assistant United States District Attorney and subsequently the United States District Attorney for the Middle District of North Carolina. He also served as the city attorney of Sanford and held various judicial positions, including a special judgeship on the North Carolina Superior Court.

Robert L. Gavin's political career reveals a complex ideological dance. Initially critical of the national Democratic Party's civil rights stance, he later advocated for the Republican Party to engage with black voters. His governance approach included a fusion strategy, aiming to unite Democratic and Republican voters, while he also sought to reduce patronage through a civil service system. These positions hint at an intricate balancing act between traditional party lines and broader electoral strategy.