William Walsh graduated from St. Bonaventure's College and holds a master's degree in social work from the University at Buffalo. He served in the United States Army Air Forces, rising to the rank of captain. Walsh began his career in public service as the Welfare Commissioner of Onondaga County, New York, and later served as mayor of Syracuse. He spent several years in Congress and was a delegate to the Republican National Convention.

William Walsh's political career is marked by an ideological fluidity that defies traditional partisan lines, as evidenced by his unexpected legislative alliances. His rhetorical style blends a folksy, community-focused tone with a strategic emphasis on regional economic interests. Walsh's approach suggests a deeply localized policymaking philosophy, balancing traditional conservative values with progressive social welfare initiatives. This blend creates a unique tension in his public persona, making his motivations and policy justifications particularly intriguing.