- Lead
- 7,293
- Total
- 103,590
- vs nation
- R+5.6
Illinois 38th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 2,712
- Total
- 105,152
- vs nation
- R+7.0
- Lead
- 4,464
- Total
- 94,478
- vs nation
- R+6.8
- Lead
- 2,924
- Total
- 88,630
- vs nation
- R+0.6
- Lead
- 13,370
- Total
- 92,852
- vs nation
- D+7.1
- Lead
- 2,773
- Total
- 82,912
- vs nation
- R+0.9
- Lead
- 1,318
- Total
- 69,090
- vs nation
- D+1.4
- Lead
- 7,620
- Total
- 62,270
- vs nation
- D+3.7
Key facts
- 2024 presidential margin
- R+7.0MIT Election Lab
- Population
- 217,2812024 5-year
- Population density
- 222 / sq mi2024 5-year · TIGER/Line
- Land area
- 980 sq miTIGER/Line
- Median household income
- $80,1392024 5-year
- White (non-Hispanic)
- 73.7%2024 5-year
- Black
- 6.2%2024 5-year
- Hispanic / Latino
- 14.2%2024 5-year
- Peak Democratic margin
- D+18.0 in 1932MIT Election Lab
- Peak Republican margin
- R+52.3 in 1920MIT Election Lab
- Most similar
- State Senate District 49, PA · twin score 71.5
presidential history
Party record book
Illinois 38th State Senate 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
Franklin D. Roosevelt1932
58.2%
30,341 votes · D+18.0 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 57.7%
Republican
Warren G. Harding1920
73.1%
24,999 votes · R+52.3 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 65.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
52,293votes
56.3% of the vote · D+14.4 · modeled estimate
Runner-up · Joe Biden, 2020 · 49,961 votes
Republican
Donald Trump2024
54,442votes
52.6% of the vote · R+7.0 · modeled estimate
Runner-up · Donald Trump, 2020 · 52,673 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
Al Smith1928
+7.7pts D vs U.S.
Place R+9.8 · U.S. R+17.5 · modeled estimate
Runner-up · Barack Obama, 2008 · +7.1 pts
Republican
Warren G. Harding1920
+26.1pts R vs U.S.
Place R+52.3 · U.S. R+26.2 · modeled estimate
Runner-up · Charles E. Hughes, 1916 · +20.2 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 | 41.1%40,700 | 58.9%58,416 | 99,116 |
| 2020 | R | 44.1%45,192 | 55.9%57,246 | 102,438 |
Illinois 38th State Senate District sits in the Upper Midwest. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 18.0 points in 1932 and a Republican high of 52.3 points in 1920. Between 2020 and 2024 the district moved 4.5 points toward the Republican candidate; the 2024 margin was 7.0 points.
A population of 217,281, a 74% non-Hispanic-white share, and a median household income of $80,139 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 49 and State Senate District 4.
The state-senate 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 38th State Senate District. Akashic. https://akashic.app/sld-upper/17038/. Accessed May 20, 2026. License: CC BY 4.0.