| Year: | 1938 |
| Type: | Midterm elections |
| Election Day: | November 8 |
| Incumbent President: | Franklin D. Roosevelt (Democratic) |
| Next Congress: | 76th |
| Senate Seats Contested: | 36 of 96 seats (32 Class 3 seats + 6 special elections)[1] |
| Senate Control: | Democratic hold |
| Senate Net Change: | Republican +8[2] |
| Senate Map Caption: | 1938 Senate election results |
| House Seats Contested: | All 435 voting seats |
| House Control: | Democratic hold |
| House Pv Margin: | Democratic +1.2% |
| House Net Change: | Republican +81 |
| House Map Caption: | 1938 House election results |
| Governor Seats Contested: | 33 |
| Governor Net Change: | Republican +12 |
| Governor Map Caption: | 1938 gubernatorial election results |
The 1938 United States elections were held on November 8, 1938, in the middle of Democratic President Franklin D. Roosevelt's second term. The Democratic Party lost 72 seats, mostly to the Republican Party, in the House of Representatives. The Democrats also lost eight seats to the Republicans in the U.S. Senate.[3] Despite these heavy losses, the Democrats maintained control of Congress.
The election was a defeat for Roosevelt, as the conservative coalition (an alliance of Republicans and Southern Democrats) took control of Congress and stymied Roosevelt's domestic agenda. Roosevelt had campaigned openly against members of his own party who had not supported the New Deal, but Roosevelt's preferred candidates met with little success across the country. The election took place in the aftermath of the recession of 1937–38 and the defeat of the Judicial Procedures Reform Bill of 1937 ("the court-packing plan"), and President Roosevelt was at the nadir of his popularity. Republicans picked up congressional seats for the first time since the start of the Great Depression, and few new major domestic programs became law until the advent of the Great Society in the 1960s.[4]