United States Senate elections, 1986 Senate composition as a result of the elections Senate composition as a result of the elections

| D_41_ | D_42_ | D_43_ | D_44_ | D_45_O | D_46_O | D_47_ | D_48_ | D_49_ | D_50_ |
|---|---|---|---|---|---|---|---|---|---|
| Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | D 51 + |
| R 45 √ | R 46 √ | R 47 √ | R 48 O | R 49 + | D 55 + | D 54 + | D 53 + | D 52 + | D 51 + |
| R 40 √ | R 39 √ | R 38 √ | R 37 √ | R 36 √ | R 35 √ | R 34 √ | R 33 √ | R 32 √ | R 31 |
| R 21 | R 22 | R 23 | R 24 | R 25 | R 26 | R 27 | R 28 | R 29 | R 30 |
| R 20 | R 19 | R 18 | R 17 | R 16 | R 15 | R 14 | R 13 | R 12 | R 11 |
| R 1 | R 2 | R 3 | R 4 | R 5 | R 6 | R 7 | R 8 | R 9 | R 10 |