Ernest Lundeen graduated from Carleton College and subsequently studied law at the University of Minnesota Law School, gaining admittance to the Minnesota bar. He served in the Minnesota House of Representatives, representing the 42nd district, before transitioning to a career in the public sector. His military experience includes service in the United States Army during the Spanish–American War. Lundeen's background in law and public service, coupled with his military experience, laid a solid foundation for his later professional endeavors.

Ernest Lundeen's political identity is marked by an intriguing blend of staunch anti-New Deal sentiments and unexpected alignments on foreign policy issues. His opposition to FDR's Lend-Lease program initially contrasts with his later alignment on certain issues, suggesting a highly calculated approach to national defense. Furthermore, Lundeen's posthumous entanglement with Nazi propaganda operations reveals a complex and morally ambiguous dimension to his public persona, raising questions about the true nature of his ideological convictions.