U.S. Senate election, 1948

The U.S. Senate election, 1948 was an election for the United States Senate which coincided with the election of Democratic President Harry Truman for a full term. Truman had campaigned against an "obstructionist" Congress that had blocked many of his initiatives, and he was rewarded with a Democratic gain of nine seats in the Senate, enough to give them control of the chamber.

In addition to gaining an open seat in Oklahoma, the Democrats defeated the following eight Republican incumbents:

Clayton D. Buck (R-DE)

Henry C. Dworshak (R-ID)

C. Wayland Brooks (R-IL)

George A. Wilson (R-IA)

John S. Cooper (R-KY)

Joseph H. Ball (R-MN)

Chapman Revercomb (R-WV)

Edward V. Robertson (R-WY)

Senate contests in 1948

¹ special election held due to death of John H. Overton (D-LA)

² special election held due to death of Harlan J. Bushfield (R-SD)