- Lead
- 15,319
- Total
- 87,131
- vs nation
- D+19.1
Illinois 8th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 29,144
- Total
- 97,400
- vs nation
- D+25.5
- Lead
- 32,545
- Total
- 85,162
- vs nation
- D+36.1
- Lead
- 25,826
- Total
- 79,887
- vs nation
- D+28.5
- Lead
- 30,983
- Total
- 83,866
- vs nation
- D+29.7
- Lead
- 18,581
- Total
- 82,807
- vs nation
- D+24.9
- Lead
- 16,445
- Total
- 75,637
- vs nation
- D+21.2
- Lead
- 16,115
- Total
- 69,340
- vs nation
- D+14.7
Key facts
- 2024 presidential margin
- D+17.6MIT Election Lab
- Population
- 217,5702024 5-year
- Population density
- 7,743 / sq mi2024 5-year · TIGER/Line
- Land area
- 28.1 sq miTIGER/Line
- Median household income
- $89,6412024 5-year
- White (non-Hispanic)
- 49.6%2024 5-year
- Black
- 6.1%2024 5-year
- Hispanic / Latino
- 15.6%2024 5-year
- Peak Democratic margin
- D+38.2 in 2016MIT Election Lab
- Peak Republican margin
- R+62.6 in 1920MIT Election Lab
- Most similar
- State Senate District 28, IL · twin score 92.8
presidential history
Party record book
Illinois 8th 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
Barack Obama2008
68.0%
57,033 votes · D+36.9 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 66.5%
Republican
Warren G. Harding1920
78.7%
34,031 votes · R+62.6 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 69.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
62,443votes
64.1% of the vote · D+29.9 · modeled estimate
Runner-up · Barack Obama, 2008 · 57,033 votes
Republican
Dwight D. Eisenhower1956
68,864votes
66.7% of the vote · R+33.5 · modeled estimate
Runner-up · Richard Nixon, 1972 · 65,369 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
Hillary Clinton2016
+36.1pts D vs U.S.
Place D+38.2 · U.S. D+2.1 · modeled estimate
Runner-up · Barack Obama, 2008 · +29.7 pts
Republican
Warren G. Harding1920
+36.4pts R vs U.S.
Place R+62.6 · U.S. R+26.2 · modeled estimate
Runner-up · William McKinley, 1896 · +29.8 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 | D | 73.1%61,025 | 26.9%22,419 | 83,444 |
Illinois 8th State Senate District sits in the Upper Midwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 38.2 points in 2016 and a Republican high of 62.6 points in 1920. Between 2020 and 2024 the district moved 12.3 points toward the Republican candidate; the 2024 margin was 17.6 points.
A population of 217,570, a 50% non-Hispanic-white share, and a median household income of $89,641 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 28 and State Senate District 18.
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 8th State Senate District. Akashic. https://akashic.app/sld-upper/17008/. Accessed May 20, 2026. License: CC BY 4.0.