Morgan Foster Larson was born in Perth Amboy, New Jersey, and studied engineering at Cooper Union Institute in New York City. He began his career in public service as Middlesex County engineer and later became a State Senator, eventually rising to Senate President. Larson sponsored the 1927 highway system bill, which laid the groundwork for future infrastructure projects. He was elected Governor of New Jersey in 1928 and faced internal party challenges during his tenure. Post-governorship, Larson continued his career in public service, working as an engineer for the Port Authority of New York and New Jersey and later as a commissioner and consulting engineer.

Morgan Foster Larson's political identity is marked by a calculated approach to regional interests, particularly evident in his highway system bill. His legislative record shows an unexpected convergence with opposing factions on environmental regulations, revealing a highly localized strategy. Larson's rhetorical style often framed elections as referendums on corruption, yet his effectiveness was frequently undermined by internal party divisions.