1966 United States Senate election in Iowa

The 1966 United States Senate election in Iowa took place on November 8, 1966. Incumbent Republican Senator Jack Miller was re-elected to a second term in office over Democrat E.B. Smith. After this race, no incumbent would be re-elected to either of Iowa's Senate seats until Chuck Grassley was elected to his second term 20 years later. == Republican primary == === Candidates === Herbert F. Hoover Jack Miller, incumbent Senator since 1961 === Results === Following his loss, Hoover registered to run in the general election as the "Iowa Party" candidate. == Democratic primary == === Candidates === Gary Cameron Robert L. Nereim E.B. Smith, Iowa State University history professor and nominee for U.S. Senate in 1962 Ernest J. Seemann, perennial candidate from Waterloo === Results === == General election == === Results === == See also == 1966 United States Senate elections == References ==