Illinois 9th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +39.0% |
| 2012 | +32.6% |
| 2016 | +42.3% |
| 2020 | +41.3% |
| 2024 | +36.4% |
Federal officeholders only. State and local officeholders are planned for the next data pass.
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
| Year | District | Won | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | 9 | D | 68.4%231,722 | 31.6%107,106 | 338,828 |
| 2022 | 9 | D | 71.7%179,615 | 28.3%70,915 | 250,530 |
| 2020 | 9 | D | 71.0%262,045 | 29.0%107,125 | 369,170 |
| 2018 | 9 | D | 73.5%213,368 | 26.5%76,983 | 290,351 |
| 2016 | 9 | D | 66.5%217,306 | 33.5%109,550 | 326,948 |
| 2014 | 9 | D | 66.1%141,000 | 33.9%72,384 | 213,450 |
| 2012 | 9 | D | 66.3%194,869 | 33.7%98,924 | 293,807 |
| 2010 | 9 | D | 66.3%117,553 | 31.1%55,182 | 177,207 |
| 2008 | 9 | D | 74.7%181,948 | 22.0%53,593 | 243,694 |
| 2006 | 9 | D | 74.6%122,852 | 25.4%41,858 | 164,713 |
| 2004 | 9 | D | 75.7%175,282 | 24.3%56,135 | 231,417 |
| 2002 | 9 | D | 70.3%118,642 | 26.8%45,307 | 168,836 |
| 2000 | 9 | D | 76.4%147,002 | 23.6%45,344 | 192,346 |
| 1998 | 9 | D | 74.6%107,878 | 23.1%33,448 | 144,610 |
| 1996 | 9 | D | 63.4%124,319 | 36.6%71,763 | 196,082 |
| 1994 | 9 | D | 66.1%94,404 | 33.9%48,419 | 142,823 |
| 1992 | 9 | D | 68.0%162,942 | 27.0%64,760 | 239,703 |
| 1990 | 9 | D | 71.2%96,557 | 28.8%39,031 | 135,588 |
| 1988 | 9 | D | 66.1%135,583 | 32.9%67,604 | 205,187 |
| 1986 | 9 | D | 71.6%92,738 | 28.4%36,715 | 129,453 |
| 1984 | 9 | D | 67.5%144,879 | 32.5%69,613 | 214,495 |
| 1982 | 9 | D | 66.5%114,083 | 32.0%54,851 | 171,529 |
| 1980 | 9 | D | 73.1%106,543 | 26.9%39,244 | 145,788 |
| 1978 | 9 | D | 75.3%87,543 | 24.7%28,673 | 116,217 |
| 1976 | 9 | D | 72.1%121,915 | 27.8%47,054 | 168,983 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | D | 56.8%2,329,136 | 41.5%1,701,055 | 4,098,896 |
| 2020 | D | 54.9%3,278,930 | 38.9%2,319,870 | 5,968,901 |
| 2016 | D | 54.9%3,012,940 | 39.8%2,184,692 | 5,491,239 |
| 2014 | D | 53.5%1,929,637 | 42.7%1,538,522 | 3,603,475 |
| 2010 | R | 46.4%1,719,478 | 48.0%1,778,698 | 3,703,370 |
| 2008 | D | 67.8%3,615,844 | 28.5%1,520,621 | 5,329,883 |
| 2004 | D | 70.0%3,597,456 | 27.1%1,390,690 | 5,138,563 |
| 2002 | D | 60.3%2,103,766 | 38.0%1,325,703 | 3,486,851 |
| 1998 | R | 47.4%1,610,496 | 50.3%1,709,041 | 3,394,521 |
| 1996 | D | 56.1%2,384,028 | 40.7%1,728,824 | 4,246,494 |
| 1992 | D | 53.3%2,631,229 | 43.1%2,126,833 | 4,939,530 |
| 1990 | D | 65.1%2,115,377 | 34.9%1,135,628 | 3,251,005 |
| 1986 | D | 65.1%2,033,783 | 33.7%1,053,734 | 3,122,883 |
| 1984 | D | 50.1%2,397,165 | 48.2%2,308,039 | 4,787,335 |
| 1980 | D | 56.0%2,565,302 | 42.5%1,946,296 | 4,579,933 |
| 1978 | R | 45.5%1,448,187 | 53.3%1,698,711 | 3,184,605 |
Illinois's 9th stretches along Lake Michigan from Chicago's Far North Side through Evanston and into the northern suburbs, combining dense urban precincts with high-education lakefront communities to produce presidential margins exceeding 35 points in recent cycles.
Across the recorded series it reached a Democratic high of 42.3 points in 2016. Between 2020 and 2024 the district moved 4.8 points toward the Republican candidate; the 2024 margin was 36.4 points.
A population of 751,737, a 62% non-Hispanic-white share, and a median household income of $92,513 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 5 and Congressional District 10.
The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Illinois 9th Congressional District. Akashic. https://akashic.app/cd/1709/. Accessed May 20, 2026. License: CC BY 4.0.