# 1986 Japanese House of Councillors election

House of Councillors elections were held in Japan on 6 July 1986 to elect half the seats in the upper house of the Diet. The elections were held alongside elections for the House of Representatives, the second and most recent such instance since 1980.

## Results

Seats :
| Party | Party | Votes | % | Seats | Votes | % | Seats | Not up | Won | Total after | +/– |
| | Liberal Democratic Party | 22,132,573 | 38.58 | 22 | 26,111,258 | 45.07 | 50 | 68 | 72 | 140 | +3 |
| | Japan Socialist Party | 9,869,088 | 17.20 | 9 | 12,464,579 | 21.51 | 11 | 21 | 20 | 41 | –3 |
| | Kōmeitō | 7,438,501 | 12.97 | 7 | 2,549,037 | 4.40 | 3 | 14 | 10 | 24 | –2 |
| | Japanese Communist Party | 5,430,838 | 9.47 | 5 | 6,617,487 | 11.42 | 4 | 7 | 9 | 16 | +2 |
| | Democratic Socialist Party | 3,940,325 | 6.87 | 3 | 2,643,370 | 4.56 | 2 | 7 | 5 | 12 | +1 |
| | Tax Affairs Party | 1,803,051 | 3.14 | 1 | 327,444 | 0.57 | 0 | 1 | 1 | 2 | New |
| | New Party for Salaried Men | 1,759,484 | 3.07 | 1 | | | | 2 | 1 | 3 | +1 |
| | Dainiin Club | 1,455,532 | 2.54 | 1 | | | | 2 | 1 | 3 | +1 |
| | New Liberal Club | 1,367,291 | 2.38 | 1 | | | | 1 | 1 | 2 | 0 |
| | Other parties | 2,166,059 | 3.78 | 0 | 1,192,801 | 2.06 | 0 | 1 | 0 | 1 | – |
| | Independents | | | | 6,032,259 | 10.41 | 6 | 1 | 6 | 7 | +1 |
| Vacant | Vacant | | | | | | 1 | 0 | 1 | 1 | – |
| Total | Total | 57,362,742 | 100.00 | 50 | 57,938,235 | 100.00 | 77 | 125 | 127 | 252 | 0 |
| Valid votes | Valid votes | 57,362,742 | 93.06 | | 57,938,235 | 93.94 | | | | | |
| Invalid/blank votes | Invalid/blank votes | 4,280,530 | 6.94 | | 3,735,135 | 6.06 | | | | | |
| Total votes | Total votes | 61,643,272 | 100.00 | | 61,673,370 | 100.00 | | | | | |
| Registered voters/turnout | Registered voters/turnout | 86,426,845 | 71.32 | | 86,426,845 | 71.36 | | | | | |
| Source: Ministry of Internal Affairs and Communications, National Diet ||||||||||||

### By constituency

| Constituency | Total seats | Seats won | Seats won | Seats won | Seats won | Seats won | Seats won | Seats won | Seats won | Seats won | Seats won |
| Constituency | Total seats | LDP | JSP | Kōmeitō | JCP | DSP | TAP | NPSM | DC | NLC | Ind. |
| Aichi | 3 | 1 | | | | 1 | | | | | 1 |
| Akita | 1 | 1 | | | | | | | | | |
| Aomori | 1 | | | | | | | | | | 1 |
| Chiba | 2 | 1 | 1 | | | | | | | | |
| Ehime | 1 | 1 | | | | | | | | | |
| Fukui | 1 | 1 | | | | | | | | | |
| Fukuoka | 3 | 2 | 1 | | | | | | | | |
| Fukushima | 2 | 1 | 1 | | | | | | | | |
| Gifu | 1 | 1 | | | | | | | | | |
| Gunma | 2 | 2 | | | | | | | | | |
| Hiroshima | 2 | 1 | | | | 1 | | | | | |
| Hokkaido | 4 | 2 | 1 | | 1 | | | | | | |
| Hyōgo | 3 | 1 | 1 | 1 | | | | | | | |
| Ibaraki | 2 | 1 | 1 | | | | | | | | |
| Ishikawa | 1 | 1 | | | | | | | | | |
| Iwate | 1 | 1 | | | | | | | | | |
| Kagawa | 1 | 1 | | | | | | | | | |
| Kagoshima | 2 | 2 | | | | | | | | | |
| Kanagawa | 2 | 1 | 1 | | | | | | | | |
| Kōchi | 1 | 1 | | | | | | | | | |
| Kumamoto | 2 | 2 | | | | | | | | | |
| Kyoto | 2 | 1 | | | 1 | | | | | | |
| Mie | 1 | 1 | | | | | | | | | |
| Miyagi | 1 | 1 | | | | | | | | | |
| Miyazaki | 1 | | | | | | | | | | 1 |
| Nagano | 2 | 1 | 1 | | | | | | | | |
| Nagasaki | 1 | 1 | | | | | | | | | |
| Nara | 1 | 1 | | | | | | | | | |
| Niigata | 2 | 1 | 1 | | | | | | | | |
| Ōita | 1 | 1 | | | | | | | | | |
| Okinawa | 1 | 1 | | | | | | | | | |
| Okayama | 2 | 1 | | | | | | | | | 1 |
| Osaka | 3 | | | 1 | 1 | | | | | | 1 |
| Saga | 1 | 1 | | | | | | | | | |
| Saitama | 2 | 1 | 1 | | | | | | | | |
| Shiga | 1 | | | | | | | | | | 1 |
| Shimane | 1 | 1 | | | | | | | | | |
| Shizuoka | 2 | 1 | 1 | | | | | | | | |
| Tochigi | 2 | 2 | | | | | | | | | |
| Tokushima | 1 | 1 | | | | | | | | | |
| Tokyo | 4 | 2 | | 1 | 1 | | | | | | |
| Tottori | 1 | 1 | | | | | | | | | |
| Toyama | 1 | 1 | | | | | | | | | |
| Wakayama | 1 | 1 | | | | | | | | | |
| Yamagata | 1 | 1 | | | | | | | | | |
| Yamaguchi | 1 | 1 | | | | | | | | | |
| Yamanashi | 1 | 1 | | | | | | | | | |
| National | 50 | 22 | 9 | 7 | 5 | 3 | 1 | 1 | 1 | 1 | |
| Total | 126 | 72 | 20 | 10 | 9 | 5 | 1 | 1 | 1 | 1 | 6 |