- Lead
- 4,025
- Total
- 51,890
- vs nation
- D+9.2
Illinois 112th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,538
- Total
- 53,840
- vs nation
- D+2.1
- Lead
- 62
- Total
- 49,867
- vs nation
- R+2.0
- Lead
- 6,216
- Total
- 48,269
- vs nation
- D+9.0
- Lead
- 11,475
- Total
- 51,226
- vs nation
- D+15.1
- Lead
- 7,361
- Total
- 47,940
- vs nation
- D+17.8
- Lead
- 8,665
- Total
- 42,934
- vs nation
- D+19.7
- Lead
- 10,805
- Total
- 40,124
- vs nation
- D+18.4
Key facts
- 2024 presidential margin
- D+7.8MIT Election Lab
- Population
- 108,6022024 5-year
- Population density
- 1,050 / sq mi2024 5-year · TIGER/Line
- Land area
- 103 sq miTIGER/Line
- Median household income
- $77,8622024 5-year
- White (non-Hispanic)
- 70.6%2024 5-year
- Black
- 15.0%2024 5-year
- Hispanic / Latino
- 6.8%2024 5-year
- Peak Democratic margin
- D+47.1 in 1964MIT Election Lab
- Peak Republican margin
- R+16.9 in 1920MIT Election Lab
- Most similar
- State House District 113, IL · twin score 78.3
presidential history
Party record book
Illinois 112th 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
Lyndon B. Johnson1964
73.6%
29,354 votes · D+47.1 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 68.0%
Republican
Theodore Roosevelt1904
52.3%
3,628 votes · R+13.4 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 51.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
30,821votes
60.2% of the vote · D+22.4 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 29,354 votes
Republican
Donald Trump2020
24,334votes
45.2% of the vote · D+6.6 · modeled estimate
Runner-up · Donald Trump, 2024 · 23,354 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
Adlai Stevenson1952
+37.3pts D vs U.S.
Place D+26.6 · U.S. R+10.8 · modeled estimate
Runner-up · Adlai Stevenson, 1956 · +35.1 pts
Republican
William H. Taft1912
+4.4pts R vs U.S.
Place D+15.2 · U.S. D+19.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +2.0 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 | R | 40.8%20,552 | 59.2%29,760 | 50,312 |
| 2020 | R | 44.3%24,295 | 55.7%30,527 | 54,822 |
Illinois 112th State House District sits in the Upper Midwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 47.1 points in 1964 and a Republican high of 16.9 points in 1920. Between 2020 and 2024 the district moved 1.2 points toward the Democratic candidate; the 2024 margin was 7.8 points.
A population of 108,602, a 71% non-Hispanic-white share, and a median household income of $77,862 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 113 and State House District 91.
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 112th State House District. Akashic. https://akashic.app/sld-lower/17112/. Accessed May 20, 2026. License: CC BY 4.0.