Horace Wilkie earned a Bachelor of Arts from the University of Wisconsin–Madison and pursued graduate studies in public administration at the University of Minnesota and American University. He served in the United States Coast Guard during World War II and later graduated with a law degree from George Washington University. Wilkie spent nearly two decades in private legal practice and held leadership roles in local government, including chairing the Madison Housing Authority and serving on the mayor's Metropolitan Development Committee.

Horace Wilkie's political philosophy reveals a complex blend of progressive economic policies and stringent regulatory measures. He uniquely combined advocacy for stricter anti-trust laws with support for expansive national programs like housing legislation and government-administered health insurance. Wilkie's approach to education policy also stood out, as he pushed for increased public welfare benefits alongside faculty pay raises at state universities. His legislative record often showed an unexpected alignment with opposing factions, suggesting a highly calculated strategy to balance regional interests with broader policy goals.