Kemp Hannon graduated from Chaminade High School and holds degrees from Boston College and Fordham University School of Law. He began his career in public service, serving in the New York State Assembly before being elected to the New York State Senate, where he chaired the Health Committee for nearly two decades. Hannon transitioned from private practice to full-time public service, demonstrating a commitment to legislative roles.

Kemp Hannon's political identity is marked by a blend of traditional conservatism with unexpected progressive alignments. He opposed marriage equality and medical marijuana but supported stringent gun control measures. Hannon's legislative record shows an intriguing convergence with opposing factions on environmental regulations, revealing a highly calculated approach to protecting regional industrial interests. His rhetorical style often emphasizes local concerns, balancing ideological consistency with strategic concessions.