United States House of Representatives elections, 1986 Illinois Illinois

| District | Incumbent | Party | First_elected | Result_ | Candidates |
|---|---|---|---|---|---|
| Illinois 14 | John E. Grotberg | Republican | 1984 | Retired Republican hold | Dennis Hastert (R) 52.4% Mary Lou Kearns (D) 47.6% |
| Illinois 15 | Edward Rell Madigan | Republican | 1972 | Re-elected | Edward Rell Madigan (R) Unopposed |
| Illinois 17 | Lane Evans | Democratic | 1982 | Re-elected | Lane Evans (D) 55.6% Sam McHard (R) 44.4% |
| Illinois 18 | Robert H. Michel | Republican | 1956 | Re-elected | Robert H. Michel (R) 62.6% Jim Dawson (D) 37.4% |
| Illinois 19 | Terry L. Bruce | Democratic | 1984 | Re-elected | Terry L. Bruce (D) 66.4% Al Salvi (R) 33.6% |
| Illinois 20 | Dick Durbin | Democratic | 1982 | Re-elected | Dick Durbin (D) 68.1% Kevin B. McCarthy (R) 31.9% |
| Illinois 21 | Melvin Price | Democratic | 1944 | Re-elected | Melvin Price (D) 50.4% Robert H. Gaffner (R) 49.6% |