Illinois 18th 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
83.5%
47,926 votes · D+68.8 · modeled estimate
Runner-up · Barack Obama, 2008 · 83.5%
Republican
Warren G. Harding1920
58.9%
10,308 votes · R+28.7 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 46.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
47,926votes
83.5% of the vote · D+68.8 · modeled estimate
Runner-up · Kamala Harris, 2024 · 43,770 votes
Republican
Dwight D. Eisenhower1956
21,397votes
45.0% of the vote · D+10.1 · modeled estimate
Runner-up · Richard Nixon, 1972 · 20,207 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
Kamala Harris2024
+68.9pts D vs U.S.
Place D+67.5 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +64.3 pts
Republican
Warren G. Harding1920
+2.5pts R vs U.S.
Place R+28.7 · U.S. R+26.2 · modeled estimate
Runner-up · William H. Taft, 1912 · +0.6 pts
current representation
Current officeholders
DRobyn GabelState House · 18
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 1 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.
Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year
Vote lead
Democratic
Republican
Total
2024
D
73.1%30,388
26.9%11,164
41,552
Illinois 18th State House District sits in the Upper Midwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 68.8 points in 2020 and a Republican high of 28.7 points in 1920. Between 2020 and 2024 the district moved 1.3 points toward the Republican candidate; the 2024 margin was 67.5 points.
A population of 108,339, a 62% non-Hispanic-white share, and a median household income of $110,025 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 11 and State House District 13.
Akashic
Political twins — state-house districts
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.
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 → · Or open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Illinois 18th State House District. Akashic. https://akashic.app/sld-lower/17018/. Accessed May 20, 2026. License: CC BY 4.0.
How did Illinois 18th State House District vote in 2024?
In 2024, Illinois 18th State House District voted Democratic by 67.5 points (D+67.5), carried by the Democratic candidate. Out of 52,880 votes cast, 43,770 went Democratic and 8,089 went Republican.
When did Illinois 18th State House District last vote Republican?
The most recent presidential election in which Illinois 18th State House District voted Republican was 1924.
How many people live in Illinois 18th State House District?
Illinois 18th State House District has a population of 108,339 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Illinois 18th State House District?
Median household income in Illinois 18th State House District is $110,025 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Illinois 18th State House District?
Akashic tracks 38 presidential elections in Illinois 18th State House District from 1876 to 2024. Of those, 34 went Democratic and 3 went Republican.