Illinois 8th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +18.5% |
| 2012 | +9.6% |
| 2016 | +15.7% |
| 2020 | +15.4% |
| 2024 | +6.9% |
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 | 8 | D | 57.1%172,920 | 42.9%130,153 | 303,073 |
| 2022 | 8 | D | 56.9%117,880 | 43.1%89,335 | 207,215 |
| 2020 | 8 | D | 73.2%186,251 | 0.0%0 | 254,578 |
| 2018 | 8 | D | 66.0%130,054 | 34.0%67,073 | 197,127 |
| 2016 | 8 | D | 58.3%144,954 | 41.7%103,617 | 248,571 |
| 2014 | 8 | D | 55.7%84,178 | 44.3%66,878 | 151,056 |
| 2012 | 8 | D | 54.7%123,206 | 45.3%101,860 | 225,066 |
| 2010 | 8 | R | 48.3%97,825 | 48.5%98,115 | 202,435 |
| 2008 | 8 | D | 60.7%179,444 | 39.3%116,081 | 295,525 |
| 2006 | 8 | D | 50.9%93,355 | 44.0%80,720 | 183,394 |
| 2004 | 8 | D | 51.7%139,792 | 48.3%130,601 | 270,393 |
| 2002 | 8 | R | 42.6%70,626 | 57.4%95,275 | 165,926 |
| 2000 | 8 | R | 39.0%90,777 | 61.0%141,918 | 232,695 |
| 1998 | 8 | R | 31.4%47,614 | 68.6%104,242 | 151,856 |
| 1996 | 8 | R | 36.1%74,068 | 62.2%127,763 | 205,305 |
| 1994 | 8 | R | 35.1%47,654 | 64.9%88,225 | 135,879 |
| 1992 | 8 | R | 40.4%96,419 | 55.7%132,887 | 238,633 |
| 1990 | 8 | D | 79.1%70,151 | 0.0%0 | 88,680 |
| 1988 | 8 | D | 74.6%107,728 | 24.0%34,659 | 144,324 |
| 1986 | 8 | D | 78.7%82,873 | 21.3%22,383 | 105,256 |
| 1984 | 8 | D | 71.3%114,385 | 28.7%46,030 | 160,417 |
| 1982 | 8 | D | 83.4%124,318 | 16.6%24,666 | 148,985 |
| 1980 | 8 | D | 84.7%98,524 | 15.3%17,845 | 116,373 |
| 1978 | 8 | D | 86.0%81,457 | 14.0%13,302 | 94,762 |
| 1976 | 8 | D | 80.5%105,595 | 19.5%25,512 | 131,107 |
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 8th stretches through the northwest Chicago suburbs, a corridor that has trended steadily toward Democratic candidates over the past decade as college-educated and Latino voters reshaped its electorate. The 2024 presidential margin landed at D+10.
Across the recorded series it reached a Democratic high of 18.5 points in 2008. Between 2020 and 2024 the district moved 8.5 points toward the Republican candidate; the 2024 margin was 6.9 points.
A population of 754,138, a 58% non-Hispanic-white share, and a median household income of $99,637 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 11 and Congressional District 5.
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 8th Congressional District. Akashic. https://akashic.app/cd/1708/. Accessed May 20, 2026. License: CC BY 4.0.