- Lead
- 10,179
- Total
- 114,984
- vs nation
- D+10.3
Illinois 19th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 16,470
- Total
- 121,520
- vs nation
- D+9.1
- Lead
- 14,915
- Total
- 109,129
- vs nation
- D+11.6
- Lead
- 10,794
- Total
- 100,970
- vs nation
- D+6.8
- Lead
- 18,089
- Total
- 104,614
- vs nation
- D+10.0
- Lead
- 2,441
- Total
- 98,380
- vs nation
- D+4.9
- Lead
- 4,991
- Total
- 81,700
- vs nation
- D+5.6
- Lead
- 8,721
- Total
- 69,691
- vs nation
- D+4.0
Key facts
- 2024 presidential margin
- D+8.9MIT Election Lab
- Population
- 217,1762024 5-year
- Population density
- 1,593 / sq mi2024 5-year · TIGER/Line
- Land area
- 136 sq miTIGER/Line
- Median household income
- $110,7122024 5-year
- White (non-Hispanic)
- 62.5%2024 5-year
- Black
- 24.8%2024 5-year
- Hispanic / Latino
- 7.3%2024 5-year
- Peak Democratic margin
- D+17.3 in 2008MIT Election Lab
- Peak Republican margin
- R+60.4 in 1920MIT Election Lab
- Most similar
- State Senate District 18, IL · twin score 93.4
presidential history
Party record book
Illinois 19th 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
58.2%
60,844 votes · D+17.3 · modeled estimate
Runner-up · Joe Biden, 2020 · 56.0%
Republican
Warren G. Harding1920
78.4%
23,100 votes · R+60.4 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 69.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
68,108votes
56.0% of the vote · D+13.6 · modeled estimate
Runner-up · Kamala Harris, 2024 · 61,391 votes
Republican
Donald Trump2020
51,638votes
42.5% of the vote · D+13.6 · modeled estimate
Runner-up · Donald Trump, 2024 · 51,212 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
+11.6pts D vs U.S.
Place D+13.7 · U.S. D+2.1 · modeled estimate
Runner-up · Kamala Harris, 2024 · +10.3 pts
Republican
Warren G. Harding1920
+34.2pts R vs U.S.
Place R+60.4 · U.S. R+26.2 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · +27.9 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 | 61.3%56,195 | 38.7%35,546 | 91,741 |
Illinois Senate District 19 delivers some of the most consistent Democratic margins in the state, reflecting a dense, urban constituency that has shown little electoral volatility across recent cycles.
Across the recorded series it reached a Democratic high of 17.3 points in 2008 and a Republican high of 60.4 points in 1920. Between 2020 and 2024 the district moved 4.7 points toward the Republican candidate; the 2024 margin was 8.9 points.
A population of 217,176, a 63% non-Hispanic-white share, and a median household income of $110,712 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 18 and State Senate District 40.
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 19th State Senate District. Akashic. https://akashic.app/sld-upper/17019/. Accessed May 20, 2026. License: CC BY 4.0.