Richard McMullen, born in Porters, Delaware, earned his foundational experience through work as a farm hand while attending Goldey Commercial College. He honed his business acumen in the tanning and leather industry, eventually founding the Standard Kid Company and rising to leadership roles in other firms. McMullen's public service career included two terms on the Wilmington City Council and service on various commissions. His tenure as Governor of Delaware was marked by significant public works initiatives during the Great Depression and labor reforms, including the endorsement of the Fair Labor Standards Act.

Richard McMullen's political career is marked by a blend of progressive labor policies and pragmatic public works initiatives. His support for the Fair Labor Standards Act, including a minimum wage and maximum workweek, contrasts with his efforts to modernize Delaware’s blue laws, revealing a nuanced approach to balancing economic and social reforms. McMullen's unexpected backing of public works projects during the Great Depression, such as the Roosevelt Inlet at Lewes, highlights a calculated strategy to stimulate economic recovery while addressing regional infrastructure needs.