Ron Johnson (Republican) is not up for re-election this year. Next election in 2022.
| Win | Lead | |
|---|---|---|
| Dem | ||
| GOP | ||
| Lib | ||
| Grn | ||
| BFA | ||
| Other |
| No Result | |
| No Election |
| Dem | GOP | Other | Counted | |
|---|---|---|---|---|
| District 1 | 42% | 55% | 3% | 100% |
| District 2 | 0% | |||
| District 3 | 60% | 40% | 100% | |
| District 4 | 76% | 22% | 3% | 100% |
| District 5 | 38% | 62% | 100% | |
| District 6 | 44% | 56% | 100% | |
| District 7 | 38% | 60% | 1% | 100% |
| District 8 | 36% | 64% | 100% |
| Win | Lead | |
|---|---|---|
| Dem | ||
| GOP | ||
| Lib | ||
| Grn | ||
| BFA | ||
| Other |
| No Result |
| Win | Lead | |
|---|---|---|
| Dem | ||
| GOP | ||
| Lib | ||
| Grn | ||
| BFA | ||
| Other |
| No Result |
