The 1932 United States Senate election in Iowa took place on November 8, 1932. Incumbent Republican Senator Smith Brookhart, a controversial progressive figure within the conservative Iowa Republican Party, was defeated in the June Republican primary by Henry A. Field. Field was in turn defeated in the general election by Democrat Louis Murphy. Brookhart also entered the general election as the candidate of the Progressive Party but finished a distant third. Murphy's victory made him just the second Democratic Senator from Iowa elected since 1858 and the first to win election directly.