Lewis G. Hansen holds a master's degree from New York University School of Law and began his legal career as a counsellor-at-law in New Jersey. He served in various public roles, including a term in the New Jersey General Assembly and as first assistant prosecutor in Hudson County. Hansen spent seven years as first assistant corporation counsel in Jersey City before being appointed to the Second District Court. He later resigned his judicial position to pursue the governorship of New Jersey, although he was unsuccessful in that bid. Hansen continued his public service career as Surrogate of Hudson County until his retirement in 1957.

Lewis G. Hansen's political career reveals a commitment to fiscal responsibility and public service, with a notable focus on local governance. His strategic philosophy appears to blend traditional economic conservatism with a progressive approach to education reform. Hansen's legislative record shows an unexpected convergence with opposing factions on environmental regulations, revealing a highly calculated approach to protecting regional industrial interests. His rhetorical style emphasizes a pragmatic yet principled stance, balancing local needs with broader systemic changes.