Richard L. Thomason graduated from Lincoln High School and earned a Bachelor of Science degree in real estate from the University of St. Thomas. He currently serves as a Relationship Manager at Central Bank in Sioux Falls. Thomason has transitioned from a private sector role to a leadership position in the South Dakota House of Representatives, where he has contributed to legislative committees focused on local government and taxation.

Richard L. Thomason's legislative record shows an unexpected convergence with opposing factions on environmental regulations, revealing a highly calculated approach to protecting regional industrial interests. His background in real estate may inform a unique perspective on local economic development policies. Thomason's rhetorical style often emphasizes pragmatic solutions, though he avoids using the term "pragmatic" himself. This combination of regional focus and strategic policy alignments suggests a politician who is deeply attuned to the specific needs and tensions of his constituency.