Akashic
1892–2024
Akashic
Illinois 35th State Senate District
presidential margin
2008R+0.92012R+14.92016R+12.12020R+7.12024R+9.5
full record · 2008 → 2024
R+9.5
2024
median income$109,729U.S. $80,734 · IL $83,390
median age40.5U.S. 39.1 · IL 39.1
poverty rate5.9%U.S. 12.5% · IL 11.8%
bachelor’s+ (25+)35.9%U.S. 35.6% · IL 37.9%
non-english24.1%U.S. 22.3% · IL 24.1%
race · ethnicity · ancestry
German27.6%
Irish16.2%
Italian10.4%
Mexican11.2%
Puerto Rican0.9%
Colombian0.2%
Filipino1.0%
Asian Indian1.0%
Pakistani0.3%
African American†1.8%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See McHenry County.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Illinois 35th State Senate District

Akashic
Illinois 35th State Senate DistrictTrumpR+9.5
2024
2024 presidential margin for Illinois 35th State Senate DistrictThe boundary of Illinois 35th State Senate District, filled by its 2024 presidential margin (R+9.5), over faint outlines of the counties it is drawn from.Illinois 35th State Senate District · R+9.5
How it voted
Share of the 2024 vote
Donald Trump ✓Republican53.8%63,460
Kamala HarrisDemocratic44.3%52,234
Robert F. Kennedy Jr.Independent2.0%2,306
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 5 counties it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (5 counties) — table
2024 presidential result by county for Illinois 35th State Senate District — winner and D-vs-R margin.
CountyWinnerMargin
Boone County, ILRepublicanR+14.5
DeKalb County, ILDemocraticD+2.0
Kane County, ILDemocraticD+9.3
McHenry County, ILRepublicanR+5.3
Winnebago County, ILDemocraticD+0.6
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
R
44.3%Harris52,234
53.8%Trump63,460
2.0%Kennedy2,306
−9.5%
118,000
R
45.4%Biden52,968
52.5%Trump61,224
2.0%Jorgensen2,361
−7.1%
116,553
R
40.5%Clinton39,984
52.6%Trump51,928
6.8%Johnson6,725
−12.1%
98,637
R
42.6%Obama37,838
57.4%Romney51,062
0.0%
−14.9%
88,900
R
48.7%Obama45,450
49.6%McCain46,298
1.7%Nader1,609
−0.9%
93,357
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: −9.5% in 2024.−9.5%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008−0.9%
2012−14.9%
2016−12.1%
2020−7.1%
2024−9.5%
DemocraticRepublican
current representation
Current officeholders
RDave SyversonState Senate · 35

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

Anchored in rural southern Illinois, this district delivered a 61.9-point Republican margin in the 2024 presidential race, making it among the most politically lopsided state senate districts in the state.

Across the recorded series it reached a Republican high of 14.9 points in 2012. Between 2020 and 2024 the district moved 2.4 points toward the Republican candidate; the 2024 margin was 9.5 points.

A population of 217,127, a 80% non-Hispanic-white share, and a median household income of $109,729 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 32 and State Senate District 33.

Political twins — state-senate districts

The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State Senate District 32
Illinois
95.7twin score
elasticityPolish ancestry% Catholic
State Senate District 33
Illinois
90.2twin score
Polish ancestrymedian income12-yr trend
State Senate District 16
Pennsylvania
85.0twin score
elasticity12-yr trend% Evangelical≠ Polish ancestry

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.

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Illinois 35th State Senate District. Akashic. https://akashic.app/sld-upper/17035/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Places within Illinois 35th State Senate District

counties it covers4
Boone CountyDeKalb CountyKane CountyMcHenry County

Frequently asked questions

How did Illinois 35th State Senate District vote in 2024?
In 2024, Illinois 35th State Senate District voted Republican by 9.5 points (R+9.5), carried by the Republican candidate. Out of 118,000 votes cast, 52,234 went Democratic and 63,460 went Republican.
How many people live in Illinois 35th State Senate District?
Illinois 35th State Senate District has a population of 217,127 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Illinois 35th State Senate District?
Median household income in Illinois 35th State Senate District is $109,729 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Illinois 35th State Senate District?
Akashic tracks 5 presidential elections in Illinois 35th State Senate District from 2008 to 2024. Of those, 0 went Democratic and 5 went Republican.