Illinois delegation in Congress
| Member | With party | With President | Rank (0–100) |
|---|---|---|---|
| Sen. Tammy DuckworthDemocrat Illinois | 98% | 5% | 30 |
| Sen. Richard J. DurbinDemocrat Illinois | 94% | 12% | 32 |
| Rep. Jonathan L. JacksonDemocrat IL-01 | 98% | 9% | 29 |
| Rep. Robin L. KellyDemocrat IL-02 | 100% | 6% | 9 |
| Rep. Delia C. RamirezDemocrat IL-03 | 99% | 3% | 7 |
| Rep. Jesús G. "Chuy" GarcíaDemocrat IL-04 | 100% | 3% | 15 |
| Rep. Mike QuigleyDemocrat IL-05 | 97% | 13% | 33 |
| Rep. Sean CastenDemocrat IL-06 | 99% | 6% | 1 |
| Rep. Danny K. DavisDemocrat IL-07 | 100% | 6% | 8 |
| Rep. Raja KrishnamoorthiDemocrat IL-08 | 98% | 9% | 30 |
| Rep. Janice D. SchakowskyDemocrat IL-09 | 100% | 6% | 1 |
| Rep. Bradley Scott SchneiderDemocrat IL-10 | 95% | 15% | 47 |
| Rep. Bill FosterDemocrat IL-11 | 97% | 14% | 43 |
| Rep. Mike BostRepublican IL-12 | 98% | 100% | 60 |
| Rep. Nikki BudzinskiDemocrat IL-13 | 94% | 18% | 34 |
| Rep. Lauren UnderwoodDemocrat IL-14 | 100% | 6% | 2 |
| Rep. Mary E. MillerRepublican IL-15 | 99% | 100% | 97 |
| Rep. Darin LaHoodRepublican IL-16 | 98% | 100% | 67 |
| Rep. Eric SorensenDemocrat IL-17 | 92% | 21% | 42 |
Rank is the percentile in all of Congress from most liberal (0) to most conservative (100).