- Lead
- 33,822
- Total
- 55,283
- vs nation
- D+62.7
Illinois 12th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 37,298
- Total
- 58,635
- vs nation
- D+59.2
- Lead
- 32,422
- Total
- 53,891
- vs nation
- D+58.1
- Lead
- 28,403
- Total
- 48,902
- vs nation
- D+54.2
- Lead
- 32,208
- Total
- 52,079
- vs nation
- D+54.6
- Lead
- 25,189
- Total
- 48,996
- vs nation
- D+53.9
- Lead
- 22,357
- Total
- 44,665
- vs nation
- D+49.5
- Lead
- 20,479
- Total
- 42,178
- vs nation
- D+40.0
Key facts
- 2024 presidential margin
- D+61.2MIT Election Lab
- Population
- 108,6562024 5-year
- Population density
- 37,468 / sq mi2024 5-year · TIGER/Line
- Land area
- 2.9 sq miTIGER/Line
- Median household income
- $105,7122024 5-year
- White (non-Hispanic)
- 76.2%2024 5-year
- Black
- 4.6%2024 5-year
- Hispanic / Latino
- 6.8%2024 5-year
- Peak Democratic margin
- D+63.6 in 2020MIT Election Lab
- Peak Republican margin
- R+37.8 in 1920MIT Election Lab
- Most similar
- State House District 11, IL · twin score 98.7
presidential history
Party record book
Illinois 12th 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
80.7%
47,345 votes · D+63.6 · modeled estimate
Runner-up · Barack Obama, 2008 · 80.2%
Republican
Warren G. Harding1920
63.7%
12,444 votes · R+37.8 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 52.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
47,345votes
80.7% of the vote · D+63.6 · modeled estimate
Runner-up · Kamala Harris, 2024 · 44,062 votes
Republican
Dwight D. Eisenhower1956
25,290votes
50.3% of the vote · R+0.5 · modeled estimate
Runner-up · Richard Nixon, 1972 · 24,058 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
+62.7pts D vs U.S.
Place D+61.2 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +59.2 pts
Republican
Warren G. Harding1920
+11.6pts R vs U.S.
Place R+37.8 · U.S. R+26.2 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · +4.6 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 | 73.1%30,476 | 26.9%11,196 | 41,672 |
With a 2024 presidential margin of D+61.2, this Chicago-area district ranks among the most lopsided in the state, reflecting dense urban settlement patterns and a heavily Democratic voting coalition.
Across the recorded series it reached a Democratic high of 63.6 points in 2020 and a Republican high of 37.8 points in 1920. Between 2020 and 2024 the district moved 2.4 points toward the Republican candidate; the 2024 margin was 61.2 points.
A population of 108,656, a 76% non-Hispanic-white share, and a median household income of $105,712 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 18.
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 12th State House District. Akashic. https://akashic.app/sld-lower/17012/. Accessed May 20, 2026. License: CC BY 4.0.