^ a bSynhorst, Melvin. "SUMMARY OF OFFICIAL CANVASS OF VOTES CAST IN IOWA PRIMARY ELECTION JUNE 3, 1980" (PDF). Iowa Secretary of State. State of Iowa. Retrieved May 20, 2022.
^"STATISTICS OF THE PRESIDENTIAL AND CONGRESSIONAL ELECTION OF NOVEMBER 4, 1980" (PDF). Office of the Clerk, U.S. House of Representatives. House of Representatives. Retrieved May 20, 2022.