The Republicans took one open seat in [|Massachusetts], while the Democrats took open seats in [|Michigan] and [|New Hampshire] and defeated incumbents Daniel O. Hastings, Lester J. Dickinson, W. Warren Barbour, Jesse H. Metcalf, and Robert D. Carey.
One Republican was re-elected, but changed party to become an Independent:
[|Nebraska]
Milestones
This was the last of four consecutive elections where Republicans suffered losses due to the ongoing effects of the Great Depression. This was also the last Senate election in the 20th century in which a Democratic candidate who won two terms also made net gains in the Senate on both occasions.
In these general elections, the winners were elected for the term beginning January 3, 1937; ordered by state. All of the elections involved the Class 2 seats.
Alabama
Arkansas
Colorado
Delaware
Florida (Special)
There were two special elections in Florida, due to the May 8, 1936 death of four-term Democrat Park Trammell and the June 17, 1936 death of five-term Democrat Duncan U. Fletcher.
Florida (Special, Class 1)
Democrat Scott M. Loftin was appointed May 26, 1936 to continue the term, pending a special election. Primaries were held August 11, 1936. Andrews would be re-elected once and serve until his death September 18, 1946.
Florida (Special, Class 3)
Democrat William Luther Hill was appointed July 1, 1936 to continue the term, pending a special election. Democrat Claude Pepper, who had lost to Trammell in 1934 won this election. Pepper would be re-elected twice and serve until he lost renomination in 1950. He would later be elected to the U.S. House of Representatives and serve there for 26 years.
Georgia
Idaho
Illinois
Iowa
Kansas
Kentucky
Louisiana
Louisiana (Special)
was elected April 21, 1936 to finish the term to which she was appointed on January 31, 1936. She was not a candidate, however, to the next term on November 3, 1936, see #Louisiana above.
Maine
Massachusetts
Michigan
Minnesota
Minnesota (Special)
The election was held to fill the vacancy in the seat formerly held by Thomas D. Schall for the final two months of Schall's unexpired term. Governor Floyd B. Olson had appointed Elmer Benson to fill the seat in 1935, but this appointment was temporary and subject to a special election held in the next general election year thereafter—1936. Benson opted to run for governor instead of running for election to continue for the remainder of the term. No special primaries were held for the special election, and, among Minnesota's three major parties, only the Republican Party of Minnesota officially fielded a candidate—Guy V. Howard. Regardless of the absence of Farmer-Labor and Democratic nominees, Howard nevertheless faced a great degree of competition from independent candidates Nathaniel J. Holmberg, Andrew Olaf Devold, and John G. Alexander.