| Election Name: | 1926 U.S. Senate election in Iowa |
| Country: | Iowa |
| Type: | presidential |
| Ongoing: | no |
| Election Date: | November 2, 1926 |
| Previous Election: | 1920 United States Senate election in Iowa |
| Previous Year: | 1920 |
| Next Election: | 1932 United States Senate election in Iowa |
| Next Year: | 1932 |
| Image1: | Smith Wildman Brookhart.jpg |
| Nominee1: | Smith W. Brookhart |
| Party1: | Republican Party (US) |
| Popular Vote1: | 323,409 |
| Percentage1: | 56.61% |
| Nominee2: | Claude R. Porter |
| Party2: | Democratic Party (US) |
| Popular Vote2: | 247,869 |
| Percentage2: | 43.39% |
| Map Size: | 220px |
| U.S. senator | |
| Before Election: | David W. Stewart |
| Before Party: | Republican Party (US) |
| After Election: | Smith W. Brookhart |
| After Party: | Republican Party (US) |
The 1926 United States Senate election in Iowa was held on November 2, 1926, alongside a concurrent special election to the same seat.
Incumbent Senator Albert B. Cummins ran for re-election to a fourth term in office but was defeated in the Republican primary by former Senator Smith W. Brookhart, who had been removed from office by a vote of the Senate in 1924.
After his primary loss, Senator Cummins died on July 30. Republicans nominated David W. Stewart, a Sioux City attorney and Cummins supporter, to run for the unexpired term ending in March 1927. Stewart was then appointed to the seat by Governor John Hammill and ran unopposed in the special election, which was held concurrently with the regular election.
See main article: 1924 United States Senate election in Iowa. Smith W. Brookhart was elected to the Senate in 1922, winning a special election to succeed William S. Kenyon.[1] After joining the Senate, Brookhart's radicalism isolated him from both parties.[2] His indifference to President Calvin Coolidge in the 1924 presidential election also upset conservatives.[3] In 1924, he ran re-election to a full term, and it initially appeared he had narrowly defeated Democratic nominee Daniel Steck despite the defection of many conservative Republicans. However, Steck challenged the result in the U.S. Senate and, during a lengthy process, the Iowa Republican Party sided with Steck. Brookhart was removed from office on April 12, 1926, and replaced with Steck by a vote of 45–41. A dozen Senate Republicans voted with Democrats to unseat Brookhart.
Iowa's other Senator, Albert B. Cummins, was a respected political veteran and took no position in the contested 1924 election, at least in part because he believed Brookhart would challenge him if unseated.[4] Though he was a leading American progressive in his early political career, Cummins's politics had gradually become more conservative following World War I.
As Brookhart was narrowly unseated on April 12, just two months before the primary, he had little time to return to Iowa and mount a campaign.