United States Senate elections, 1964 Senate composition as a result of the elections Senate composition as a result of the elections

| D_50_ | D_49_ | D_48_ | D_47_ | D_46_ | D_45_ | D_44_ | D_43_ | D_42_ | D_41_ |
|---|---|---|---|---|---|---|---|---|---|
| D 11 | D 12 | D 13 | D 14 | D 15 | D 16 | D 17 | D 18 | D 19 | D 20 |
| D 30 | D 29 | D 28 | D 27 | D 26 | D 25 | D 24 | D 23 | D 22 | D 21 |
| D 31 | D 32 | D 33 | D 34 | D 35 | D 36 | D 37 | D 38 | D 39 | D 40 |
| D 50 √ | D 49 √ | D 48 √ | D 47 √ | D 46 √ | D 45 √ | D 44 √ | D 43 √ | D 42 √ | D 41 √ |