- Lead
- 759
- Total
- 46,996
- vs nation
- D+3.1
Illinois 104th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 770
- Total
- 50,829
- vs nation
- R+2.9
- Lead
- 1,640
- Total
- 47,681
- vs nation
- R+5.5
- Lead
- 1,287
- Total
- 44,524
- vs nation
- R+6.7
- Lead
- 4,291
- Total
- 48,081
- vs nation
- D+1.7
- Lead
- 2,401
- Total
- 47,917
- vs nation
- R+2.6
- Lead
- 31
- Total
- 44,450
- vs nation
- R+0.4
- Lead
- 3,715
- Total
- 41,914
- vs nation
- D+0.3
Key facts
- 2024 presidential margin
- D+1.6MIT Election Lab
- Population
- 108,6122024 5-year
- Population density
- 193 / sq mi2024 5-year · TIGER/Line
- Land area
- 563 sq miTIGER/Line
- Median household income
- $68,1142024 5-year
- White (non-Hispanic)
- 67.2%2024 5-year
- Black
- 15.4%2024 5-year
- Hispanic / Latino
- 6.7%2024 5-year
- Peak Democratic margin
- D+22.5 in 1932MIT Election Lab
- Peak Republican margin
- R+35.4 in 1904MIT Election Lab
- Most similar
- State House District 80, MI · twin score 69.1
presidential history
Party record book
Illinois 104th 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
Franklin D. Roosevelt1932
60.1%
22,983 votes · D+22.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 58.2%
Republican
Theodore Roosevelt1904
62.4%
9,211 votes · R+35.4 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 62.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
25,946votes
57.2% of the vote · D+14.5 · modeled estimate
Runner-up · Barack Obama, 2008 · 25,627 votes
Republican
Ronald Reagan1984
27,240votes
57.4% of the vote · R+15.3 · modeled estimate
Runner-up · Richard Nixon, 1972 · 26,565 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
Bill Clinton1992
+9.0pts D vs U.S.
Place D+14.6 · U.S. D+5.6 · modeled estimate
Runner-up · Michael Dukakis, 1988 · +8.0 pts
Republican
Theodore Roosevelt1904
+15.7pts R vs U.S.
Place R+35.4 · U.S. R+19.7 · modeled estimate
Runner-up · William H. Taft, 1912 · +13.8 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 | 44.0%18,989 | 56.0%24,168 | 43,157 |
| 2020 | R | 46.1%22,029 | 53.9%25,802 | 47,831 |
With a 2024 presidential margin of just D+1.6, this district sits near the tipping point between the parties, making it a persistent target for both sides in state legislative cycles.
Across the recorded series it reached a Democratic high of 22.5 points in 1932 and a Republican high of 35.4 points in 1904. The 2024 margin was 1.6 points.
A population of 108,612, a 67% non-Hispanic-white share, and a median household income of $68,114 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 80 and State House District 97.
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 104th State House District. Akashic. https://akashic.app/sld-lower/17104/. Accessed May 20, 2026. License: CC BY 4.0.