| Year | President | House | Senate | Unified/ Divided |
|---|---|---|---|---|
| 1933-1935 | F. Roosevelt (D) | D | D | Unified |
| 1935-1937 | D | D | Unified | |
| 1937-1939 | D | D | Unified | |
| 1939-1941 | D | D | Unified | |
| 1941-1943 | D | D | Unified | |
| 1943-1945 | D | D | Unified | |
| 1945-1947 | Truman (D) | D | D | Unified |
| 1947-1949 | R | R | Divided | |
| 1949-1951 | D | D | Unified | |
| 1951-1953 | D | D | Unified | |
| 1953-1955 | Eisenhower (R) | R | R | Unified |
| 1955-1957 | D | D | Divided | |
| 1957-1959 | D | D | Divided | |
| 1959-1961 | D | D | Divided | |
| 1961-1963 | Kennedy (D) | D | D | Unified |
| 1963-1965 | Johnson (D) | D | D | Unified |
| 1965-1967 | D | D | Unified | |
| 1967-1969 | D | D | Unified | |
| 1969-1971 | Nixon (R) | D | D | Divided |
| 1971-1973 | D | D | Divided | |
| 1973-1975 | Nixon/Ford (R) | D | D | Divided |
| 1975-1977 | D | D | Divided | |
| 1977-1979 | Carter (D) | D | D | Unified |
| 1979-1981 | D | D | Unified | |
| 1981-1983 | Reagan (R) | D | R | Divided-House |
| 1983-1985 | D | R | Divided-House | |
| 1985-1987 | D | R | Divided-House | |
| 1987-1989 | D | D | Divided | |
| 1989-1991 | Bush (R) | D | D | Divided |
| 1991-1993 | D | D | Divided | |
| 1993-1995 | Clinton (D) | D | D | Unified |
| 1995-1997 | R | R | Divided | |
| 1997-1999 | R | R | Divided | |
| 1999-2001 | R | R | Divided | |
| 2001-2003 | G.W. Bush (R) | R | D1 | Divided-Senate |
| 2003-2005 | R | R | Unified |