- Lead
- 20,872
- Total
- 33,362
- vs nation
- D+64.0
Illinois 4th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 28,774
- Total
- 39,754
- vs nation
- D+67.9
- Lead
- 29,444
- Total
- 37,329
- vs nation
- D+76.8
- Lead
- 26,791
- Total
- 33,591
- vs nation
- D+75.9
- Lead
- 29,842
- Total
- 36,420
- vs nation
- D+74.7
- Lead
- 25,072
- Total
- 33,113
- vs nation
- D+78.2
- Lead
- 22,296
- Total
- 30,220
- vs nation
- D+73.3
- Lead
- 20,256
- Total
- 28,115
- vs nation
- D+63.5
Key facts
- 2024 presidential margin
- D+62.6MIT Election Lab
- Population
- 108,5332024 5-year
- Population density
- 19,041 / sq mi2024 5-year · TIGER/Line
- Land area
- 5.7 sq miTIGER/Line
- Median household income
- $84,9442024 5-year
- White (non-Hispanic)
- 26.7%2024 5-year
- Black
- 13.1%2024 5-year
- Hispanic / Latino
- 56.1%2024 5-year
- Peak Democratic margin
- D+81.9 in 2008MIT Election Lab
- Peak Republican margin
- R+1.3 in 1924MIT Election Lab
- Most similar
- State House District 39, IL · twin score 99.0
presidential history
Party record book
Illinois 4th 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
90.3%
32,893 votes · D+81.9 · modeled estimate
Runner-up · Barack Obama, 2012 · 89.1%
Republican
Warren G. Harding1920
43.9%
4,081 votes · R+0.9 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 37.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
33,847votes
85.1% of the vote · D+72.4 · modeled estimate
Runner-up · Barack Obama, 2008 · 32,893 votes
Republican
Dwight D. Eisenhower1956
8,607votes
30.4% of the vote · D+39.2 · modeled estimate
Runner-up · Richard Nixon, 1972 · 8,055 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
+78.2pts D vs U.S.
Place D+75.7 · U.S. R+2.5 · modeled estimate
Runner-up · Hillary Clinton, 2016 · +76.8 pts
Republican
William H. Taft1912
−11.9pts R vs U.S.
Place D+31.4 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · Calvin Coolidge, 1924 · −23.9 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of D+62.6, this Chicago-area district ranks among the most one-sided legislative constituencies in the state, reflecting the dense urban geography and demographic composition that drive lopsided results here.
Across the recorded series it reached a Democratic high of 81.9 points in 2008 and a Republican high of 1.3 points in 1924. Between 2020 and 2024 the district moved 9.8 points toward the Republican candidate; the 2024 margin was 62.6 points.
A population of 108,533, a 27% non-Hispanic-white share, and a median household income of $84,944 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 39 and State House District 3.
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 4th State House District. Akashic. https://akashic.app/sld-lower/17004/. Accessed May 20, 2026. License: CC BY 4.0.