| Score | Name | State | Title | Party |
|---|
| 136 |  |
 |
Dave Loebsack | Iowa | Rep. (Dist-2) | Democrat |
| 160 |  |
 |
Chuck Grassley | Iowa | Senator | Republican |
| 166 | |
 |
Bruce Braley | Iowa | Rep. (Dist-1) | Democrat |
| 200 | |
 |
Steve King | Iowa | Rep. (Dist-5) | Republican |
| 270 | |
 |
Tom Harkin | Iowa | Senator | Democrat |
| 389 | |
 |
Leonard Boswell | Iowa | Rep. (Dist-3) | Democrat |
| 441 | |
 |
Tom Latham | Iowa | Rep. (Dist-4) | Republican |
