- Lead
- 35,596
- Total
- 106,202
- vs nation
- D+35.0
Illinois 29th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 41,121
- Total
- 114,096
- vs nation
- D+31.6
- Lead
- 35,270
- Total
- 102,522
- vs nation
- D+32.3
- Lead
- 25,212
- Total
- 95,365
- vs nation
- D+22.6
- Lead
- 34,466
- Total
- 100,864
- vs nation
- D+26.9
- Lead
- 15,798
- Total
- 94,236
- vs nation
- D+19.2
- Lead
- 13,361
- Total
- 84,048
- vs nation
- D+15.4
- Lead
- 12,751
- Total
- 75,132
- vs nation
- D+8.5
Key facts
- 2024 presidential margin
- D+33.5MIT Election Lab
- Population
- 216,8152024 5-year
- Population density
- 2,194 / sq mi2024 5-year · TIGER/Line
- Land area
- 98.8 sq miTIGER/Line
- Median household income
- $134,9092024 5-year
- White (non-Hispanic)
- 70.3%2024 5-year
- Black
- 2.6%2024 5-year
- Hispanic / Latino
- 13.3%2024 5-year
- Peak Democratic margin
- D+36.0 in 2020MIT Election Lab
- Peak Republican margin
- R+64.4 in 1920MIT Election Lab
- Most similar
- State Senate District 27, IL · twin score 94.2
presidential history
Party record book
Illinois 29th 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
Joe Biden2020
67.2%
76,660 votes · D+36.0 · modeled estimate
Runner-up · Barack Obama, 2008 · 66.3%
Republican
Warren G. Harding1920
78.8%
23,860 votes · R+64.4 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 70.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
76,660votes
67.2% of the vote · D+36.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 70,028 votes
Republican
Richard Nixon1972
54,319votes
64.0% of the vote · R+28.6 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 53,086 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
+35.0pts D vs U.S.
Place D+33.5 · U.S. R+1.5 · modeled estimate
Runner-up · Hillary Clinton, 2016 · +32.3 pts
Republican
Warren G. Harding1920
+38.2pts R vs U.S.
Place R+64.4 · U.S. R+26.2 · modeled estimate
Runner-up · William McKinley, 1896 · +34.1 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 | 65.9%58,097 | 34.1%30,039 | 88,136 |
Anchored in rural and small-town central Illinois, this district backed the 2024 Republican presidential nominee by 28.4 points, making it a consistent outlier in a state that trends Democratic at the statewide level.
Across the recorded series it reached a Democratic high of 36.0 points in 2020 and a Republican high of 64.4 points in 1920. Between 2020 and 2024 the district moved 2.5 points toward the Republican candidate; the 2024 margin was 33.5 points.
A population of 216,815, a 70% non-Hispanic-white share, and a median household income of $134,909 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 27 and State Senate District 9.
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 29th State Senate District. Akashic. https://akashic.app/sld-upper/17029/. Accessed May 20, 2026. License: CC BY 4.0.