United States Senate elections, 1980 As a result of the elections As a result of the elections

| D_40_ | D_41_ | D_42_ | D_43_ | D_44_ | D_45_O | D_46_O | R_53_ | R_52_ | R_51_ |
|---|---|---|---|---|---|---|---|---|---|
| D 19 | D 18 | D 17 | D 16 | D 15 | D 14 | D 13 | D 12 | D 11 | D 10 |
| D 20 | D 21 | D 22 | D 23 | D 24 | D 25 | D 26 | D 27 | D 28 | D 29 |
| D 39 √ | D 38 √ | D 37 √ | D 36 √ | D 35 √ | D 34 | D 33 | D 32 | D 31 | D 30 |
| D 40 √ | D 41 √ | D 42 √ | D 43 √ | D 44 √ | D 45 O | D 46 O | R 53 + | R 52 + | R 51 + |