| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| WI-01 | Les AspinDEM | DEM | 224,442 | 56.2% | D+13.4 |
| WI-02 | DEM | 263,138 | 54.0% | D+8.6 | |
| WI-03 | REP | 258,868 | 51.0% | R+2.0 | |
| WI-04 | DEM | 209,139 | 70.0% | D+40.8 | |
| WI-05 | DEM | 168,218 | 77.0% | D+54.9 | |
| WI-06 | REP | 242,611 | 59.4% | R+18.7 | |
| WI-07 | David R ObeyDEM | DEM | 254,107 | 64.7% | D+29.4 |
| WI-08 | Toby RothREP | REP | 250,726 | 67.7% | R+35.4 |
| WI-09 | REP | 263,079 | 78.4% | R+56.8 |