- Lead
- 18,876
- Total
- 49,009
- vs nation
- D+40.0
Illinois 27th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 27,511
- Total
- 56,686
- vs nation
- D+44.1
- Lead
- 29,568
- Total
- 56,342
- vs nation
- D+50.4
- Lead
- 25,363
- Total
- 52,656
- vs nation
- D+44.3
- Lead
- 29,244
- Total
- 55,962
- vs nation
- D+45.0
- Lead
- 21,496
- Total
- 53,616
- vs nation
- D+42.6
- Lead
- 19,040
- Total
- 47,890
- vs nation
- D+39.2
- Lead
- 17,605
- Total
- 43,989
- vs nation
- D+31.5
Key facts
- 2024 presidential margin
- D+38.5MIT Election Lab
- Population
- 108,6052024 5-year
- Population density
- 3,538 / sq mi2024 5-year · TIGER/Line
- Land area
- 30.7 sq miTIGER/Line
- Median household income
- $75,9902024 5-year
- White (non-Hispanic)
- 35.8%2024 5-year
- Black
- 51.9%2024 5-year
- Hispanic / Latino
- 7.6%2024 5-year
- Peak Democratic margin
- D+52.5 in 2016MIT Election Lab
- Peak Republican margin
- R+49.5 in 1920MIT Election Lab
- Most similar
- State House District 28, IL · twin score 98.8
presidential history
Party record book
Illinois 27th 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
Barack Obama2008
75.9%
42,481 votes · D+52.3 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 74.5%
Republican
Warren G. Harding1920
72.2%
16,210 votes · R+49.5 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 65.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
42,481votes
75.9% of the vote · D+52.3 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 41,999 votes
Republican
Dwight D. Eisenhower1956
33,451votes
57.0% of the vote · R+14.0 · modeled estimate
Runner-up · Richard Nixon, 1972 · 31,999 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
+50.4pts D vs U.S.
Place D+52.5 · U.S. D+2.1 · modeled estimate
Runner-up · Barack Obama, 2008 · +45.0 pts
Republican
Warren G. Harding1920
+23.3pts R vs U.S.
Place R+49.5 · U.S. R+26.2 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · +18.6 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 | 72.4%30,323 | 27.6%11,581 | 41,904 |
Illinois 27th State House District sits in the Upper Midwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 52.5 points in 2016 and a Republican high of 49.5 points in 1920. Between 2020 and 2024 the district moved 10.0 points toward the Republican candidate; the 2024 margin was 38.5 points.
A population of 108,605, a 36% non-Hispanic-white share, and a median household income of $75,990 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 28 and State House District 31.
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 27th State House District. Akashic. https://akashic.app/sld-lower/17027/. Accessed May 20, 2026. License: CC BY 4.0.