PolitiFinder

1966 Iowa U.S. Senate Election

Iowa · 6 candidates · See every 1966 U.S. Senate race

Who won the 1966 Iowa U.S. Senate Election?

Jack Miller won the 1966 Iowa U.S. Senate Election. Jack Miller received 522,339 popular votes (60.91%). The main challenger was E. B. Smith (37.8%).

See the full head-to-head between Miller and Smith

Miller +23.1 pts · won by 198,225 votes
Jack MillerRepublicanWINNER60.91%
522,339 votes
E. B. SmithDemocratic37.8%
324,114 votes
Robert D. DilleyAmerican Constitution0.45%
3,826 votes
Charles H. DayIndependent0.36%
3,050 votes
Herbert F. HooverIowa0.24%
2,085 votes
Uerne M. HigensProhibition0.24%
2,081 votes
Popular-vote totals for this U.S. Senate election come from the Constituency-Level Elections Archive (CLEA) and the official public record.

Data last verified July 28, 2026.