HarrisDemocratic24.4%14,539TrumpRepublican73.9%44,038OtherAll other candidates1.7%1,004
R+49.5- Lead
- 29,499
- Total
- 59,581
- vs nation
- R+48.0
modeled Census-place estimatemodeled estimate
Akashicstate house district
Illinois 100th State House District
Office (updates table and map)
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
President results by year
Modeled candidate-vote estimate on current district boundaries
BidenDemocratic25.1%15,358TrumpRepublican72.8%44,603OtherAll other candidates2.2%1,318
R+47.7- Lead
- 29,245
- Total
- 61,279
- vs nation
- R+52.2
modeled Census-place estimatemodeled estimate
ClintonDemocratic24.4%13,811TrumpRepublican70.4%39,831OtherAll other candidates5.1%2,907
R+46.0- Lead
- 26,020
- Total
- 56,549
- vs nation
- R+48.1
modeled Census-place estimatemodeled estimate
ObamaDemocratic35.5%18,864RomneyRepublican62.0%32,939OtherAll other candidates2.5%1,339
R+26.5- Lead
- 14,075
- Total
- 53,142
- vs nation
- R+30.3
modeled Census-place estimatemodeled estimate
ObamaDemocratic43.6%24,015McCainRepublican54.5%30,018OtherAll other candidates2.0%1,096
R+10.9- Lead
- 6,003
- Total
- 55,129
- vs nation
- R+18.2
modeled Census-place estimatemodeled estimate
KerryDemocratic39.6%21,953BushRepublican59.6%33,001OtherAll other candidates0.8%441
R+19.9- Lead
- 11,048
- Total
- 55,395
- vs nation
- R+17.5
modeled Census-place estimatemodeled estimate
GoreDemocratic42.6%21,886BushRepublican55.7%28,604OtherAll other candidates1.7%891
R+13.1- Lead
- 6,718
- Total
- 51,381
- vs nation
- R+13.6
modeled Census-place estimatemodeled estimate
ClintonDemocratic44.9%22,309DoleRepublican42.1%20,886OtherAll other candidates13.0%6,462
D+2.9- Lead
- 1,423
- Total
- 49,657
- vs nation
- R+5.7
modeled Census-place estimatemodeled estimate
Key facts
- 2024 presidential margin
- R+49.5MIT Election Lab
- Population
- 108,7072024 5-year
- Population density
- 32 / sq mi2024 5-year · TIGER/Line
- Land area
- 3,377 sq miTIGER/Line
- Median household income
- $77,5492024 5-year
- White (non-Hispanic)
- 93.1%2024 5-year
- Black
- 1.1%2024 5-year
- Hispanic / Latino
- 1.5%2024 5-year
- Peak Democratic margin
- D+24.0 in 1932MIT Election Lab
- Peak Republican margin
- R+49.5 in 2024MIT Election Lab
- Most similar
- State House District 108, IL · twin score 97.7
presidential history
Party record book
Illinois 100th 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
60.8%
33,206 votes · D+24.0 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 57.2%
Republican
Donald Trump2024
73.9%
44,038 votes · R+49.5 · modeled estimate
Runner-up · Donald Trump, 2020 · 72.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Franklin D. Roosevelt1936
33,830votes
55.1% of the vote · D+12.2 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 33,206 votes
Republican
Donald Trump2020
44,603votes
72.8% of the vote · R+47.7 · modeled estimate
Runner-up · Donald Trump, 2024 · 44,038 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 W. Davis1924
+19.2pts D vs U.S.
Place R+6.0 · U.S. R+25.2 · modeled estimate
Runner-up · William J. Bryan, 1900 · +18.4 pts
Republican
Donald Trump2020
+52.2pts R vs U.S.
Place R+47.7 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +48.1 pts
current representation
Current officeholders
RC.D. DavidsmeyerState House · 100
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 2 House
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 | 13.6%6,576 | 86.4%41,709 | 48,285 |
| 2020 | R | 27.2%15,422 | 72.8%41,324 | 56,746 |
With a 2024 presidential margin of R+49.4, this downstate district ranks among the state's most one-sided legislative constituencies, reflecting the rural and small-town demographic patterns common to far southern Illinois.
Across the recorded series it reached a Democratic high of 24.0 points in 1932 and a Republican high of 49.5 points in 2024. Between 2020 and 2024 the district moved 1.8 points toward the Republican candidate; the 2024 margin was 49.5 points.
A population of 108,707, a 93% non-Hispanic-white share, and a median household income of $77,549 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 108 and State House District 102.
Political twins — state-house districts
The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
State House District 108
Illinois
97.7twin score
elasticity2016–2024 trajectory
State House District 102
Illinois
96.6twin score
elasticity2016–2024 trajectory
State House District 115
Illinois
96.4twin score
2020–2024 trajectory12-yr trendelasticity
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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Illinois 100th State House District. Akashic. https://akashic.app/sld-lower/17100/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Places within Illinois 100th State House District
Frequently asked questions
How did Illinois 100th State House District vote in 2024?
In 2024, Illinois 100th State House District voted Republican by 49.5 points (R+49.5), carried by the Republican candidate. Out of 59,581 votes cast, 14,539 went Democratic and 44,038 went Republican.
When did Illinois 100th State House District last vote Democratic?
The most recent presidential election in which Illinois 100th State House District voted Democratic was 1996.
How many people live in Illinois 100th State House District?
Illinois 100th State House District has a population of 108,707 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Illinois 100th State House District?
Median household income in Illinois 100th State House District is $77,549 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Illinois 100th State House District?
Akashic tracks 38 presidential elections in Illinois 100th State House District from 1876 to 2024. Of those, 15 went Democratic and 23 went Republican.