- Lead
- 23,867
- Total
- 37,392
- vs nation
- D+65.3
Illinois 9th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 31,840
- Total
- 43,414
- vs nation
- D+68.9
- Lead
- 33,323
- Total
- 43,062
- vs nation
- D+75.3
- Lead
- 30,162
- Total
- 39,012
- vs nation
- D+73.5
- Lead
- 33,548
- Total
- 42,093
- vs nation
- D+72.4
- Lead
- 28,209
- Total
- 38,367
- vs nation
- D+76.0
- Lead
- 25,062
- Total
- 34,850
- vs nation
- D+71.4
- Lead
- 22,671
- Total
- 32,478
- vs nation
- D+61.3
Key facts
- 2024 presidential margin
- D+63.8MIT Election Lab
- Population
- 108,6872024 5-year
- Population density
- 12,638 / sq mi2024 5-year · TIGER/Line
- Land area
- 8.6 sq miTIGER/Line
- Median household income
- $91,1802024 5-year
- White (non-Hispanic)
- 30.0%2024 5-year
- Black
- 44.9%2024 5-year
- Hispanic / Latino
- 9.9%2024 5-year
- Peak Democratic margin
- D+79.7 in 2008MIT Election Lab
- Peak Republican margin
- R+6.7 in 1920MIT Election Lab
- Most similar
- State House District 10, IL · twin score 98.7
presidential history
Party record book
Illinois 9th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Barack Obama2008
89.4%
37,640 votes · D+79.7 · modeled estimate
Runner-up · Barack Obama, 2012 · 88.0%
Republican
Warren G. Harding1920
48.3%
5,281 votes · R+6.7 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 40.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
37,640votes
89.4% of the vote · D+79.7 · modeled estimate
Runner-up · Joe Biden, 2020 · 37,216 votes
Republican
Dwight D. Eisenhower1956
10,965votes
32.8% of the vote · D+34.5 · modeled estimate
Runner-up · Richard Nixon, 1972 · 10,452 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
John Kerry2004
+76.0pts D vs U.S.
Place D+73.5 · U.S. R+2.5 · modeled estimate
Runner-up · Hillary Clinton, 2016 · +75.3 pts
Republican
William H. Taft1912
−12.1pts R vs U.S.
Place D+31.6 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · Warren G. Harding, 1920 · −19.4 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 73.1%30,485 | 26.9%11,199 | 41,684 |
Illinois 9th State House District sits in the Upper Midwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 79.7 points in 2008 and a Republican high of 6.7 points in 1920. Between 2020 and 2024 the district moved 9.5 points toward the Republican candidate; the 2024 margin was 63.8 points.
A population of 108,687, a 30% non-Hispanic-white share, and a median household income of $91,180 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 10 and State House District 26.
The state-house 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.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
Illinois 9th State House District. Akashic. https://akashic.app/sld-lower/17009/. Accessed May 20, 2026. License: CC BY 4.0.