- Lead
- 2,455
- Total
- 53,797
- vs nation
- R+3.1
Illinois 48th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 1,683
- Total
- 56,987
- vs nation
- R+1.5
- Lead
- 2,050
- Total
- 49,922
- vs nation
- D+2.0
- Lead
- 4,094
- Total
- 48,247
- vs nation
- R+12.3
- Lead
- 43
- Total
- 49,430
- vs nation
- R+7.4
- Lead
- 9,424
- Total
- 49,643
- vs nation
- R+16.5
- Lead
- 9,657
- Total
- 44,874
- vs nation
- R+22.0
- Lead
- 7,401
- Total
- 40,184
- vs nation
- R+26.9
Key facts
- 2024 presidential margin
- R+4.6MIT Election Lab
- Population
- 108,5682024 5-year
- Population density
- 2,991 / sq mi2024 5-year · TIGER/Line
- Land area
- 36.3 sq miTIGER/Line
- Median household income
- $105,7832024 5-year
- White (non-Hispanic)
- 68.8%2024 5-year
- Black
- 2.3%2024 5-year
- Hispanic / Latino
- 14.3%2024 5-year
- Peak Democratic margin
- D+4.1 in 2016MIT Election Lab
- Peak Republican margin
- R+77.2 in 1920MIT Election Lab
- Most similar
- State House District 49, IL · twin score 87.8
presidential history
Party record book
Illinois 48th 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
Joe Biden2020
50.4%
28,729 votes · D+3.0 · modeled estimate
Runner-up · Barack Obama, 2008 · 49.4%
Republican
Warren G. Harding1920
86.2%
9,298 votes · R+77.2 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 81.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
28,729votes
50.4% of the vote · D+3.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 25,029 votes
Republican
Ronald Reagan1984
35,990votes
77.5% of the vote · R+55.4 · modeled estimate
Runner-up · George H. W. Bush, 1988 · 32,789 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
Hillary Clinton2016
+2.0pts D vs U.S.
Place D+4.1 · U.S. D+2.1 · modeled estimate
Runner-up · Joe Biden, 2020 · −1.5 pts
Republican
William McKinley1896
+55.1pts R vs U.S.
Place R+61.2 · U.S. R+6.1 · modeled estimate
Runner-up · Charles E. Hughes, 1916 · +54.0 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 | D | 60.0%29,819 | 40.0%19,851 | 49,670 |
| 2020 | D | 64.8%25,086 | 35.2%13,600 | 38,686 |
Illinois 48th State House District sits in the Upper Midwest. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 4.1 points in 2016 and a Republican high of 77.2 points in 1920. Between 2020 and 2024 the district moved 7.5 points toward the Republican candidate; the 2024 margin was 4.6 points.
A population of 108,568, a 69% non-Hispanic-white share, and a median household income of $105,783 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 49 and State House District 55.
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 48th State House District. Akashic. https://akashic.app/sld-lower/17048/. Accessed May 20, 2026. License: CC BY 4.0.