James M. Tunnell graduated from Franklin College in 1900 and subsequently taught in public schools, eventually becoming a principal in various Delaware towns. He was admitted to the bar in 1907 and practiced law while also engaging in banking and farming. Tunnell served as President of the Georgetown Board of Education and held leadership roles in the banking sector, including a long tenure as Director of the Farmers' Bank of Delaware. His professional background encompasses education, law, banking, and agriculture, establishing a diverse set of qualifications and interests.

James M. Tunnell's political identity is marked by a distinctive blend of localism and progressive advocacy. His career reveals an unexpected alignment with banking interests while simultaneously supporting the Equal Rights Amendment, showcasing a nuanced approach to economic and social policies. Tunnell's tenure as president of the Georgetown Board of Education and his advocacy for public education improvements in Delaware further illustrate his commitment to community-centric policies. His long-standing role as a director of the Farmers' Bank of Delaware juxtaposes his support for broader economic reforms, hinting at a strategic balancing act between local economic interests and progressive social change.